WWBN AVideo is an open source video platform. In versions 29.0 and prior, the locale save endpoint (`locale/save.php`) constructs a file path by directly concatenating `$_POST['flag']` into the path at line 30 without any sanitization. The `$_POST['code']` parameter is then written verbatim to that path via `fwrite()` at line 40. An admin attacker (or any user who can CSRF an admin, since no CSRF token is checked and cookies use `SameSite=None`) can traverse out of the `locale/` directory and write arbitrary `.php` files to any writable location on the filesystem, achieving Remote Code Execution. Commit 57f89ffbc27d37c9d9dd727212334846e78ac21a fixes the issue.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/WWBN/AVideo/commit/57f89ffbc27d37c9d9dd727212334846e78ac21a Patch
- https://github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f Exploit, Vendor Advisory
- https://github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · wwbnNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*
References 3
- https://github.com/WWBN/AVideo/commit/57f89ffbc27d37c9d9dd727212334846e78ac21a Patch
- https://github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f Exploit, Vendor Advisory
- https://github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f Exploit, Vendor Advisory