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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34247.json",
"cwe_ids": [
"CWE-862"
],
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "26.0"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}