CVE Watch9 sept 2026

CVE-2026-53599

REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rex_mediapool::isAllowedExtension in redaxo/src/addons/mediapool/

CVSS

7.5

Alto

EPSS

0.4%

p34

KEV

—

Exploit Today

0-100

Publicado: 31 jul 2026 · Última mod.: 9 sept 2026 · CWE-434

EPSS · 30d

0.3%EPSS · 30 días0.4%

2026-08-242026-09-22

Descripción técnica

REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rex_mediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php lets an authenticated backend user with media[upload] permission upload a JPEG/PHP polyglot named shell.php.any.jpg, which web servers with multi-extension PHP handlers can execute as the web-server user. This issue is fixed in version 5.21.1.

Referencias oficiales

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