CVE-2026-86721: Improper Authentication in WWBN AVideo
Description
AVideo through commit c3edcc274c contains an authorization bypass vulnerability where a session cookie named 'key' with value 'value' overrides the $_REQUEST['key'] parameter in saveLive.php and related endpoints. Attackers can publish to any user's RTMP stream without authentication by using the known constant stream key value to hijack live broadcasts.
CVSS v4.0
Score 8.7high
Affected software
WWBN
AVideo
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
AVideo versions identified as '=0' contain an authorization bypass vulnerability where a session cookie named 'key' with a constant value overrides the $_REQUEST['key'] parameter in saveLive.php and related endpoints. This allows unauthenticated attackers to publish to any user's RTMP stream by using the known constant stream key value, enabling live broadcast hijacking. The vulnerability has a CVSS 4.0 score of 8.7, indicating high severity, with network attack vector, no privileges required, no user interaction, and high impact on integrity.
Potential Impact
Attackers can bypass authentication controls and publish to any user's RTMP stream, hijacking live broadcasts. This compromises the integrity of live streaming content and potentially disrupts legitimate broadcasts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch link is provided in the available data. Until a patch is available, restrict access to saveLive.php and related endpoints and monitor for unauthorized stream publishing attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-08T11:30:41.420Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa029bdacd9273b49d8b654
Added to database: 09/08/2026, 15:29:01 UTC
Last enriched: 09/19/2026, 22:19:01 UTC
Last updated: 10/22/2026, 01:15:26 UTC
Views: 41
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