CVE-2026-53599

Published: Jul 31, 2026Modified: Sep 9, 2026Deferred

7.5

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.6 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-434

Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

References (5)

https://github.com/redaxo/core/commit/462e36896bb65d292ba22d711044c23c9cfb0340

Source: security-advisories@github.com

https://github.com/redaxo/core/pull/6538

Source: security-advisories@github.com

https://github.com/redaxo/core/releases/tag/5.21.1

Source: security-advisories@github.com

https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25

Source: security-advisories@github.com

https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.