CVE-2026-84187: Improper Access Control in WWBN AVideo
Description
AVideo contains a missing authentication vulnerability in plugin/Live/on_publish.php that allows unauthenticated attackers to mark arbitrary scheduled broadcasts as failed by sending crafted POST requests with schedule identifiers. Attackers can exploit the unguarded RTMP callback endpoint to modify scheduled broadcast status fields by supplying fabricated stream keys matching the pattern -ps-<N>, silently canceling any scheduled live broadcast without credentials or authorization.
CVSS v4.0
Score 8.8high
Affected software
WWBN
AVideo
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84187 describes an improper access control vulnerability in WWBN AVideo's plugin Live/on_publish.php. The flaw is a missing authentication check on an RTMP callback endpoint, allowing unauthenticated attackers to send crafted POST requests with schedule identifiers and fabricated stream keys matching the pattern '-ps-<N>'. This enables attackers to modify the status of scheduled broadcasts, marking them as failed and effectively canceling live broadcasts without any credentials or authorization.
Potential Impact
An attacker can silently cancel any scheduled live broadcast by exploiting the unprotected RTMP callback endpoint, causing denial of service for legitimate scheduled streams. This can disrupt live content delivery and impact availability of the service. No direct data confidentiality or integrity impact beyond broadcast status modification is indicated.
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. Until a fix is available, restrict access to the RTMP callback endpoint if possible and monitor for suspicious POST requests matching the described pattern.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-01T10:51:59.728Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a96bc90acd9273b49a7f7d5
Added to database: 09/01/2026, 11:52:48 UTC
Last enriched: 09/07/2026, 14:47:30 UTC
Last updated: 10/15/2026, 18:48:24 UTC
Views: 95
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