CVE-2026-81891

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

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

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 · Alta · EPSS 0,9% · Corrección disponible

Publicación

2026-08-31T20:33:22.283Z

Actualización

2026-09-01T14:58:22.211Z

Pila tecnológica: php

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