LiveLink hijacking via unchecked linkId ownership
Published Sep 11, 2026 · Updated Sep 15, 2026
Authorization bypass in WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 allows remote authenticated users to alter LiveLinks. The addLiveLink.php update path loads a caller-supplied linkId and saves its HLS source and metadata without comparing the stored owner to the session user. A canStream account and onlyAdminCanAddLinks=false are required; successful use redirects viewers on a victim's LiveLink page to attacker-controlled media.
Summary
What happened
Authorization bypass in WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 allows remote authenticated users to alter LiveLinks. The addLiveLink.php update path loads a caller-supplied linkId and saves its HLS source and metadata without comparing the stored owner to the session user. A canStream account and onlyAdminCanAddLinks=false are required; successful use redirects viewers on a victim's LiveLink page to attacker-controlled media.
The record
- CVE
- CVE-2026-89252
- Published
- Sep 11, 2026
- Updated
- Sep 15, 2026
- Vendor
- WWBN
- Product
- AVideo
- Classifications
- CWE-639, CWE-862, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=c3edcc274c389816d434acadac07ee78eaf330c1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Authenticated LiveLink overwrite proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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