CVE-2026-53599

Published: Lug 31, 2026 Last Modified: Ago 01, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

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.

434

Unrestricted Upload of File with Dangerous Type

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: ASP.NET, PHP, Not Language-Specific
Technologies: Web Server, AI/ML
Likelihood of Exploit: Medium
View CWE Details
https://github.com/redaxo/core/security/advisories/GHSA-98p…
https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25
https://github.com/redaxo/core/commit/462e36896bb65d292ba22…
https://github.com/redaxo/core/commit/462e36896bb65d292ba22d711044c23c9cfb0340
https://github.com/redaxo/core/pull/6538
https://github.com/redaxo/core/pull/6538
https://github.com/redaxo/core/releases/tag/5.21.1
https://github.com/redaxo/core/releases/tag/5.21.1
https://github.com/redaxo/core/security/advisories/GHSA-98p…
https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25