CVE-2026-81891
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Studio-42/elFinderPackagist | < 2.1.70 | 2.1.70 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-gxmj-r5rf-ggwqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-81891ghsaADVISORY
- github.com/Studio-42/elFinder/commit/191372c1bbebbd36fb55af79a84b9984861390ffnvdWEB
- github.com/Studio-42/elFinder/commit/dd73e702820c146a192969800ee674ecdb208365nvdWEB
- github.com/Studio-42/elFinder/releases/tag/2.1.70nvdWEB
- github.com/Studio-42/elFinder/security/advisories/GHSA-gxmj-r5rf-ggwqnvdWEB
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