{"id":"CVE-2026-81891","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-81891","summary":"elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, checkExtractItems() in php/elFinderVolumeDriver.class.php calls mimetypeInternalDetect()…","details":"elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, checkExtractItems() in php/elFinderVolumeDriver.class.php calls mimetypeInternalDetect() without passing the result through mimeTypeNormalize(). Because the .phtml, .phar, .php5, and .php3 extensions are absent from mime.types, the staticMimeMap entries that map them to text/x-php are not applied, and allowPutMime() permits extraction even when uploadDeny blocks text/x-php. An attacker with ZIP upload permission can extract PHP-executable files into a web-accessible files/ directory and achieve remote code execution when the server executes those extensions. This issue is fixed in version 2.1.70.","published":"2026-08-31T21:17:52.757","modified":"2026-08-31T21:17:52.757","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff","label":"Studio-42/elFinder@191372c"},"references":[{"type":"WEB","url":"https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff"},{"type":"WEB","url":"https://github.com/Studio-42/elFinder/commit/dd73e702820c146a192969800ee674ecdb208365"},{"type":"WEB","url":"https://github.com/Studio-42/elFinder/releases/tag/2.1.70"},{"type":"WEB","url":"https://github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwq"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-31T21:17:52.757"}}