{"items":[{"id":"NVI-00006016","kind":"vulnerability","title":"elFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)","revision":3,"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-gxmj-r5rf-ggwq","CVE-2026-81891"],"plain_summary":"OSV carries this publisher advisory for Studio-42/elFinder. 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 2.1.70 for Studio-42/elFinder. Confirm the publisher’s latest guidance.","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"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-9196a32cf7f6cc1ff8645442a2f8e404"],"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":"CVSS","as_of":"2026-09-09T21:09:13.080Z","value":"8.1 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-48ea581ac859d910b25d6d97ef674fb7"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.904%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.59799. Missing scores are unknown.","source_id":"sr-9196a32cf7f6cc1ff8645442a2f8e404"}],"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-a46d228c4654da5c2772d0460e52ed69","url":"https://github.com/advisories/GHSA-gxmj-r5rf-ggwq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-gxmj-r5rf-ggwq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.423Z"},{"id":"sr-48ea581ac859d910b25d6d97ef674fb7","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81891","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-81891","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:58.008Z"},{"id":"sr-9196a32cf7f6cc1ff8645442a2f8e404","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-2026-81891","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.385Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"technology":"Studio-42/elFinder","known_exclusions":[],"conditions_summary":"### Summary\n\nelFinder provides `uploadDeny` and `uploadAllow` options in its connector configuration to restrict which MIME types may be uploaded. When `uploadDeny` includes `text/x-php`, direct upload of `.php`, `.phtml`, and `.phar` files is correctly blocked. However, the `extract` command (ZIP decompression) internally calls `checkExtractItems()`, which invokes `mimetypeInternalDetect()` directly without passing the result through `mimeTypeNormalize()`. Because `phtml`, `phar`, and similar PHP-executable extensions are absent from `mime.types`, they are not resolved to `text/x-php` at the detection stage, causing the MIME filter to be silently bypassed. An attacker who is permitted to upload ZIP archives can therefore extract PHP-executable files into the web-accessible `files/` directory. If the server is configured to execute the affected extension (e.g., `.phtml`, `.phar`) as PHP — which is the case in common Apache and Nginx deployments — this results in Remote Code Execution.\n\n---\n\n### Details\n\nelFinder's MIME validation pipeline for **direct uploads** (`upload` command) is:\n\n```\nmimetype()\n  └─ mimetypeInternalDetect()   // stage 1: extension → MIME via mime.types\n  └─ mi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.1.70"]}],"null_published_at":"2026-11-03T02:33:09.151Z","source_updated_at":"2026-09-02T20:30:04.228Z","source_disclosed_at":"2026-09-02T14:37:54.000Z","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":"2026-10-31T21:42:20.423Z"},{"id":"NVI-00006016","kind":"vulnerability","title":"elFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)","revision":2,"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-gxmj-r5rf-ggwq","CVE-2026-81891"],"plain_summary":"OSV carries this publisher advisory for Studio-42/elFinder. 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 2.1.70 for Studio-42/elFinder. Confirm the publisher’s latest guidance.","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"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-48ea581ac859d910b25d6d97ef674fb7"],"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":"CVSS","as_of":"2026-09-09T21:09:13.080Z","value":"8.1 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-48ea581ac859d910b25d6d97ef674fb7"}],"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-a46d228c4654da5c2772d0460e52ed69","url":"https://github.com/advisories/GHSA-gxmj-r5rf-ggwq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-gxmj-r5rf-ggwq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.423Z"},{"id":"sr-48ea581ac859d910b25d6d97ef674fb7","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81891","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-81891","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:58.008Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"technology":"Studio-42/elFinder","known_exclusions":[],"conditions_summary":"### Summary\n\nelFinder provides `uploadDeny` and `uploadAllow` options in its connector configuration to restrict which MIME types may be uploaded. When `uploadDeny` includes `text/x-php`, direct upload of `.php`, `.phtml`, and `.phar` files is correctly blocked. However, the `extract` command (ZIP decompression) internally calls `checkExtractItems()`, which invokes `mimetypeInternalDetect()` directly without passing the result through `mimeTypeNormalize()`. Because `phtml`, `phar`, and similar PHP-executable extensions are absent from `mime.types`, they are not resolved to `text/x-php` at the detection stage, causing the MIME filter to be silently bypassed. An attacker who is permitted to upload ZIP archives can therefore extract PHP-executable files into the web-accessible `files/` directory. If the server is configured to execute the affected extension (e.g., `.phtml`, `.phar`) as PHP — which is the case in common Apache and Nginx deployments — this results in Remote Code Execution.\n\n---\n\n### Details\n\nelFinder's MIME validation pipeline for **direct uploads** (`upload` command) is:\n\n```\nmimetype()\n  └─ mimetypeInternalDetect()   // stage 1: extension → MIME via mime.types\n  └─ mi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.1.70"]}],"null_published_at":"2026-11-01T14:34:07.645Z","source_updated_at":"2026-09-02T20:30:04.228Z","source_disclosed_at":"2026-09-02T14:37:54.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:20.423Z"},{"id":"NVI-00006016","kind":"vulnerability","title":"elFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-gxmj-r5rf-ggwq","CVE-2026-81891"],"plain_summary":"OSV carries this publisher advisory for Studio-42/elFinder. 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 2.1.70 for Studio-42/elFinder. Confirm the publisher’s latest guidance.","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"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-a46d228c4654da5c2772d0460e52ed69","url":"https://github.com/advisories/GHSA-gxmj-r5rf-ggwq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-gxmj-r5rf-ggwq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.423Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a46d228c4654da5c2772d0460e52ed69"],"technology":"Studio-42/elFinder","known_exclusions":[],"conditions_summary":"### Summary\n\nelFinder provides `uploadDeny` and `uploadAllow` options in its connector configuration to restrict which MIME types may be uploaded. When `uploadDeny` includes `text/x-php`, direct upload of `.php`, `.phtml`, and `.phar` files is correctly blocked. However, the `extract` command (ZIP decompression) internally calls `checkExtractItems()`, which invokes `mimetypeInternalDetect()` directly without passing the result through `mimeTypeNormalize()`. Because `phtml`, `phar`, and similar PHP-executable extensions are absent from `mime.types`, they are not resolved to `text/x-php` at the detection stage, causing the MIME filter to be silently bypassed. An attacker who is permitted to upload ZIP archives can therefore extract PHP-executable files into the web-accessible `files/` directory. If the server is configured to execute the affected extension (e.g., `.phtml`, `.phar`) as PHP — which is the case in common Apache and Nginx deployments — this results in Remote Code Execution.\n\n---\n\n### Details\n\nelFinder's MIME validation pipeline for **direct uploads** (`upload` command) is:\n\n```\nmimetype()\n  └─ mimetypeInternalDetect()   // stage 1: extension → MIME via mime.types\n  └─ mi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.1.70"]}],"null_published_at":"2026-10-31T22:13:05.855Z","source_updated_at":"2026-09-02T20:30:04.228Z","source_disclosed_at":"2026-09-02T14:37:54.000Z","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":"2026-10-31T21:42:20.423Z"}],"next_cursor":null,"snapshot_revision":"42594"}