CVE-2026-81891
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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() 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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Studio-42 | elFinder | < 2.1.70 | affected |
Weaknesses
- CWE-434: CWE-434: Unrestricted Upload of File with Dangerous Type
References
- https://github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwq
- https://github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ff
- https://github.com/Studio-42/elFinder/commit/dd73e702820c146a192969800ee674ecdb208365
- https://github.com/Studio-42/elFinder/releases/tag/2.1.70
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