cvedb.io
CVE-2026-43877
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-05-11T22:22:12.113 · Last modified 2026-06-17T10:50:00.830

Summary

WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/userSavePhoto.php is a legacy profile-photo endpoint that accepts a base64 POST parameter and writes the decoded bytes to videos/userPhoto/photo<users_id>.png. Its only access control is User::isLogged(). It does not end in .json.php, so it is excluded from the project's global autoCSRFGuard (which is suffix-scoped in objects/include_config.php). There is no CSRF token, no Origin/Referer check, and no MIME validation of the decoded bytes. Because AVideo's default cookie policy is SameSite=None; Secure on HTTPS (objects/functionsPHP.php:227), an attacker who lures a logged-in user to a malicious page can overwrite that user's profile photo with arbitrary bytes and also triggers a site-wide clearCache

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.