CVE-2026-86721: Improper Authentication in WWBN AVideo
AVideo contains an authorization bypass vulnerability in saveLive.php and related endpoints where a session cookie named 'key' with a fixed value overrides the request parameter, allowing attackers to publish to any user's RTMP stream without authentication. This flaw enables hijacking of live broadcasts by using a known constant stream key value.
AI Analysis
Technical Summary
CVE-2026-86721 describes an improper authentication vulnerability in WWBN AVideo, specifically in the saveLive.php endpoint and related components. The vulnerability arises because a session cookie named 'key' with a constant value 'value' overrides the $_REQUEST['key'] parameter, which is used for stream authentication. This allows an attacker to bypass authentication controls and publish to any user's RTMP stream, effectively hijacking live broadcasts without needing valid credentials or user interaction.
Potential Impact
An attacker can hijack live broadcasts by publishing to any user's RTMP stream without authentication, potentially disrupting legitimate streams or impersonating users. This can lead to unauthorized content injection and loss of stream integrity. The vulnerability has a high severity score (CVSS 8.7) indicating significant impact if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor the vendor's communications for updates and consider restricting access to the affected endpoints until a fix is available.
CVE-2026-86721: Improper Authentication in WWBN AVideo
Description
AVideo contains an authorization bypass vulnerability in saveLive.php and related endpoints where a session cookie named 'key' with a fixed value overrides the request parameter, allowing attackers to publish to any user's RTMP stream without authentication. This flaw enables hijacking of live broadcasts by using a known constant stream key value.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86721 describes an improper authentication vulnerability in WWBN AVideo, specifically in the saveLive.php endpoint and related components. The vulnerability arises because a session cookie named 'key' with a constant value 'value' overrides the $_REQUEST['key'] parameter, which is used for stream authentication. This allows an attacker to bypass authentication controls and publish to any user's RTMP stream, effectively hijacking live broadcasts without needing valid credentials or user interaction.
Potential Impact
An attacker can hijack live broadcasts by publishing to any user's RTMP stream without authentication, potentially disrupting legitimate streams or impersonating users. This can lead to unauthorized content injection and loss of stream integrity. The vulnerability has a high severity score (CVSS 8.7) indicating significant impact if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor the vendor's communications for updates and consider restricting access to the affected endpoints until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-08T11:30:41.420Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa029bdacd9273b49d8b654
Added to database: 09/08/2026, 15:29:01 UTC
Last enriched: 09/08/2026, 15:38:31 UTC
Last updated: 09/09/2026, 01:31:04 UTC
Views: 10
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