{"items":[{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":6,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"GitHub lists this reviewed advisory for league/flysystem. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0945efd178cab6900f2ad8ea8d944944"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T21:26:47.000Z","value":"3.5 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-290b6364c051e24a42420e849c7b0be0"},{"kind":"CVSS","as_of":"2026-09-30T19:38:27.293Z","value":"3.5 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-a17a76565e202fcc9fb76d3c705063a0"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.337%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.27253. Missing scores are unknown.","source_id":"sr-0945efd178cab6900f2ad8ea8d944944"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-290b6364c051e24a42420e849c7b0be0","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-a17a76565e202fcc9fb76d3c705063a0","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102601","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102601","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:38.141Z"},{"id":"sr-0945efd178cab6900f2ad8ea8d944944","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102601","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.308Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["<= 3.35.2"]},{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-11-06T15:18:17.649Z","source_updated_at":"2026-09-30T21:26:47.000Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":5,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"GitHub lists this reviewed advisory for league/flysystem. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0945efd178cab6900f2ad8ea8d944944"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T21:26:47.000Z","value":"3.5 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-290b6364c051e24a42420e849c7b0be0"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.337%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.27253. Missing scores are unknown.","source_id":"sr-0945efd178cab6900f2ad8ea8d944944"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-290b6364c051e24a42420e849c7b0be0","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-0945efd178cab6900f2ad8ea8d944944","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102601","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.308Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["<= 3.35.2"]},{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-11-06T07:24:11.290Z","source_updated_at":"2026-09-30T21:26:47.000Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"GitHub lists this reviewed advisory for league/flysystem. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-01aeac53e0494b77a005f0819943a3a0"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T21:26:47.000Z","value":"3.5 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-290b6364c051e24a42420e849c7b0be0"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.337%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.27127. Missing scores are unknown.","source_id":"sr-01aeac53e0494b77a005f0819943a3a0"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-290b6364c051e24a42420e849c7b0be0","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-01aeac53e0494b77a005f0819943a3a0","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102601","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.837Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["<= 3.35.2"]},{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-11-03T17:49:14.977Z","source_updated_at":"2026-09-30T21:26:47.000Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"GitHub lists this reviewed advisory for league/flysystem. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-86123fcb5eda3e66d3dcc5ef49493fbe"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T21:26:47.000Z","value":"3.5 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-290b6364c051e24a42420e849c7b0be0"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.337%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.27141. Missing scores are unknown.","source_id":"sr-86123fcb5eda3e66d3dcc5ef49493fbe"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-290b6364c051e24a42420e849c7b0be0","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"},{"id":"sr-86123fcb5eda3e66d3dcc5ef49493fbe","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102601","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["<= 3.35.2"]},{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-11-03T02:33:09.113Z","source_updated_at":"2026-09-30T21:26:47.000Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"GitHub lists this reviewed advisory for league/flysystem. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T21:26:47.000Z","value":"3.5 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-290b6364c051e24a42420e849c7b0be0"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-290b6364c051e24a42420e849c7b0be0","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-290b6364c051e24a42420e849c7b0be0"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["<= 3.35.2"]},{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-11-01T07:29:12.906Z","source_updated_at":"2026-09-30T21:26:47.000Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.706Z"},{"id":"NVI-00004242","kind":"vulnerability","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cxf4-7mrp-vvpr","CVE-2026-102601"],"plain_summary":"OSV carries this publisher advisory for league/flysystem. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 3.35.3 for league/flysystem. Confirm the publisher’s latest guidance.","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-5e8cec5d39ef398436aaa41a99e2b5bf","url":"https://github.com/advisories/GHSA-cxf4-7mrp-vvpr","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cxf4-7mrp-vvpr","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.706Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5e8cec5d39ef398436aaa41a99e2b5bf"],"technology":"league/flysystem","known_exclusions":[],"conditions_summary":"## Related public issue (context, not a duplicate)\n\nClosed issue #1429 (\"Handle non-UTF-8 paths\", 2024-03-24) raised exactly this general concern and\neven suggested detection via `preg_match('//u', $path) !== 1` -- note the reporter's suggested check\nexplicitly compares `!== 1`, which *would* correctly treat PCRE's `false` return as \"reject.\" The\nmaintainer's reply pointed to the `PathNormalizer` interface as the place to implement this. The\ncontrol-character check that ended up shipping in `WhitespacePathNormalizer`\n(`if (preg_match('#\\p{C}+#u', $unixPath))`) addresses the general concern but does **not** use the\n`!== 1`-style comparison the original issue suggested -- it uses a bare truthy check, which is exactly\nthe gap this report demonstrates. So this is not a duplicate of #1429; it's a concrete bypass\nsurviving in the fix that issue's concern led to.\n\n## Vulnerability Details\n\n**File**: `src/WhitespacePathNormalizer.php`, lines 22-28 (`normalizePath()`) -- the **default**\n`PathNormalizer` used by `Filesystem` for every adapter (Local, FTP, SFTP, S3, AsyncAwsS3, Azure, GCS,\nZipArchive, GridFS, InMemory) unless the application supplies a custom one.\n\n### Root Cause\n\n```php\npubl","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.35.3"]}],"null_published_at":"2026-10-31T22:12:52.636Z","source_updated_at":"2026-09-30T21:30:04.116Z","source_disclosed_at":"2026-09-29T18:10:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:10.706Z"}],"next_cursor":null,"snapshot_revision":"42594"}