{"items":[{"id":"NVI-00003787","kind":"vulnerability","title":"Dompdf: Chroot Validation Bypass","revision":5,"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-wvh6-f5jh-8gw4","CVE-2026-55554"],"plain_summary":"GitHub lists this reviewed advisory for dompdf/dompdf. 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-0763612e2abc3c701d17219ad73b511b"],"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 3.1.6 for dompdf/dompdf. Confirm the publisher’s latest guidance.","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"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":"2026-08-05T16:37:42.623Z","value":"7.5 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-b65dca4cb4a67da3c59a4273898c3733"},{"kind":"CVSS","as_of":"2026-08-05T16:37:42.623Z","value":"2.3 LOW (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-b65dca4cb4a67da3c59a4273898c3733"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.451%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39244. Missing scores are unknown.","source_id":"sr-0763612e2abc3c701d17219ad73b511b"}],"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-3d74d98020adada715271af909753107","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"},{"id":"sr-4b0c22f946320c97af3f11239d299bcb","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.435Z"},{"id":"sr-b65dca4cb4a67da3c59a4273898c3733","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55554","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55554","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"},{"id":"sr-0763612e2abc3c701d17219ad73b511b","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-2026-55554","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.788Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d74d98020adada715271af909753107"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["< 3.1.6"]},{"certainty":"source_listed","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.1.6"]}],"null_published_at":"2026-11-06T15:18:17.693Z","source_updated_at":"2026-07-22T21:06:49.000Z","source_disclosed_at":"2026-07-22T21:06:48.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:51.435Z"},{"id":"NVI-00003787","kind":"vulnerability","title":"Dompdf: Chroot Validation Bypass","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wvh6-f5jh-8gw4","CVE-2026-55554"],"plain_summary":"GitHub lists this reviewed advisory for dompdf/dompdf. 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-0763612e2abc3c701d17219ad73b511b"],"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 3.1.6 for dompdf/dompdf. Confirm the publisher’s latest guidance.","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"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":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.451%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39244. Missing scores are unknown.","source_id":"sr-0763612e2abc3c701d17219ad73b511b"}],"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-3d74d98020adada715271af909753107","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"},{"id":"sr-4b0c22f946320c97af3f11239d299bcb","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.435Z"},{"id":"sr-0763612e2abc3c701d17219ad73b511b","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-2026-55554","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.788Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d74d98020adada715271af909753107"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["< 3.1.6"]},{"certainty":"source_listed","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.1.6"]}],"null_published_at":"2026-11-04T10:04:41.555Z","source_updated_at":"2026-07-22T21:06:49.000Z","source_disclosed_at":"2026-07-22T21:06:48.000Z","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":"2026-10-31T21:42:51.435Z"},{"id":"NVI-00003787","kind":"vulnerability","title":"Dompdf: Chroot Validation Bypass","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wvh6-f5jh-8gw4","CVE-2026-55554"],"plain_summary":"OSV carries this publisher advisory for dompdf/dompdf. 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 3.1.6 for dompdf/dompdf. Confirm the publisher’s latest guidance.","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0a9cd39b86083a0fc14a7ec2c2d5f293"],"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}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.451%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39193. Missing scores are unknown.","source_id":"sr-0a9cd39b86083a0fc14a7ec2c2d5f293"}],"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-4b0c22f946320c97af3f11239d299bcb","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.435Z"},{"id":"sr-0a9cd39b86083a0fc14a7ec2c2d5f293","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-2026-55554","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.857Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.1.6"]}],"null_published_at":"2026-11-03T17:49:15.037Z","source_updated_at":"2026-07-22T21:26:46.998Z","source_disclosed_at":"2026-07-22T21:06:48.000Z","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":"2026-10-31T21:42:51.435Z"},{"id":"NVI-00003787","kind":"vulnerability","title":"Dompdf: Chroot Validation Bypass","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wvh6-f5jh-8gw4","CVE-2026-55554"],"plain_summary":"OSV carries this publisher advisory for dompdf/dompdf. 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 3.1.6 for dompdf/dompdf. Confirm the publisher’s latest guidance.","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"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-4b0c22f946320c97af3f11239d299bcb","url":"https://github.com/advisories/GHSA-wvh6-f5jh-8gw4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wvh6-f5jh-8gw4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.435Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4b0c22f946320c97af3f11239d299bcb"],"technology":"dompdf/dompdf","known_exclusions":[],"conditions_summary":"### Summary\nThe chroot check for local files uses a prefix string check to enforce chroot boundaries. The simple string comparison it performs allows paths like /var/www/root_secret/file.html when chroot is /var/www/root.\n\nThis allows attacker-controlled document paths/resources to bypass intended local file restrictions.\n\n### Details\nThe `validateLocalUri()` method is used to check if a local file is within an allowed chroot directory. After normalization with `realpath()`, this check is performed with a `strpos()` comparison:\n\n\n```\n    public function validateLocalUri(string $uri)\n    {\n        ...\n        $realfile = realpath(str_replace(\"file://\", \"\", $uri));\n        ...\n        foreach ($dirs as $chrootPath) {\n            $chrootPath = realpath($chrootPath);\n            if ($chrootPath !== false && strpos($realfile, $chrootPath) === 0) {\n                $chrootValid = true;\n```\n\nDue to the normalization, the `$chrootPath` string does not have a terminating directory separator (`/`) appended. Because of this, the `strpos()` check only validates that `$chrootPath` is a _prefix_ of  `$realfile`. This allows access to folders with similar names that fall outside of the defined chr","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.1.6"]}],"null_published_at":"2026-10-31T22:12:48.030Z","source_updated_at":"2026-07-22T21:26:46.998Z","source_disclosed_at":"2026-07-22T21:06:48.000Z","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":"2026-10-31T21:42:51.435Z"}],"next_cursor":null,"snapshot_revision":"42594"}