CVE-2026-33647
CVE-2026-33647 · AVideo Vulnerable to Remote Code Execution via MIME/Extension Mismatch in ImageGallery File Upload
This page contains facts from public vulnerability sources. Check the original advisory before updating.
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `ImageGallery::saveFile()` method validates uploaded file content using `finfo` MIME type detection but derives the saved filename extension from the user-supplied original filename without an allowlist check. An attacker can upload a polyglot file (valid JPEG magic bytes followed by PHP code) with a `.php` extension. The MIME check passes, but the file is saved as an executable `.php` file in a web-accessible directory, achieving Remote Code Execution. Commit 345a8d3ece0ad1e1b71a704c1579cbf885d8f3ae contains a patch.
CVSS 8.8 · High · EPSS 0.7%
- Published
- Updated
Stack: php
Affected products and versions
avideo
- Versions
- <= 26.0: Affected
No fix published
wwbn/avideo Packagist
- Versions
- 10.4
- 10.8
- 11
- 11.1
- 11.1.1
- 11.5
- 11.6
- 12.4
- 14.3
- 14.3.1
- 14.4
- 18.0
- 21.0
- 22.0
- 24.0
- 25.0
- 26.0
- Affected ranges
- ECOSYSTEM: ≤ 26.0
No fix published