CVE-2026-34247 Details
Description
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `plugin/Live/uploadPoster.php` endpoint allows any authenticated user to overwrite the poster image for any scheduled live stream by supplying an arbitrary `live_schedule_id`. The endpoint only checks `User::isLogged()` but never verifies that the authenticated user owns the targeted schedule. After overwriting the poster, the endpoint broadcasts a `socketLiveOFFCallback` notification containing the victim's broadcast key and user ID to all connected WebSocket clients. Commit 5fcb3bdf59f26d65e203cfbc8a685356ba300b60 fixes the issue.
A vulnerability in the WWBN AVideo live streaming plugin, affecting versions through 26.0, allows any authenticated user to overwrite poster images for scheduled live streams. This is achieved by sending an arbitrary live_schedule_id to the uploadPoster.php endpoint, which lacks proper authorization checks. After the poster is replaced, the endpoint sends a misleading notification to all connected WebSocket clients, falsely indicating that the victim's stream has gone offline.
The vulnerability has been patched in commit 5fcb3bdf59f26d65e203cfbc8a685356ba300b60. Users should update to the latest version of WWBN AVideo.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 27, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/commit/5fcb3bdf59f26d65e203cfbc8a685356ba300b60 | [email protected] | Patch |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-g3hj-mf85-679g | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wwbn avideo | <= 26.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 31, 2026 | Initial Analysis | [email protected] |
| Mar 27, 2026 | New CVE Received | [email protected] |