Missing Authorization in AVideo - CVE-2026-34247
Published: April 8, 2026
Vulnerability identifier: #VU125486
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-34247
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: World Wide Broadcast Network
Affected software:
AVideo
AVideo
Detailed vulnerability description
The vulnerability allows a remote user to overwrite scheduled live stream posters and disclose sensitive information.
The vulnerability exists due to missing authorization in plugin/Live/uploadPoster.php when handling authenticated file upload requests with an arbitrary live_schedule_id. A remote user can upload a crafted poster for another user's scheduled stream to overwrite scheduled live stream posters and disclose sensitive information.
The issue also triggers a socketLiveOFFCallback broadcast to all connected WebSocket clients and schedule IDs are sequential integers that can be trivially enumerated.
How to mitigate CVE-2026-34247
Install security update from vendor's website.