Description
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.
Affected products
wwbn: avideo
References3
- github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f ExploitVendor Advisory
- github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686f ExploitVendor Advisory
- github.com/WWBN/AVideo/commit/57f89ffbc27d37c9d9dd727212334846e… Patch
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N - EPSS — exploit probability
- 1% percentile: 52 · as of 13 November 2026
- CWE
- CWE-22
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