CVE-2026-81891

CVE-2026-81891 · elFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)

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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.

CVSS 8.1 · Hoch · EPSS 0,9% · Korrektur verfügbar

Veröffentlicht

2026-08-31T20:33:22.283Z

Aktualisiert

2026-09-01T14:58:22.211Z

Technologie-Stack: php

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