CVE-2026-40909
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
wwbn/avideoPackagist | <= 29.0 | — |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- github.com/WWBN/AVideo/commit/57f89ffbc27d37c9d9dd727212334846e78ac21anvdPatchWEB
- github.com/WWBN/AVideo/security/advisories/GHSA-6rc6-p838-686fnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-6rc6-p838-686fghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-40909ghsaADVISORY
News mentions
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