Restream hijacking via unchecked destination identifier
Published Sep 8, 2026 · Updated Sep 8, 2026
Missing authorization in AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 allows remote authenticated users to hijack destinations. The endpoint validates ownership of live_transmitions_history_id but passes an arbitrary live_restreams_id to Live::restream(), which loads another user's stream URL and key. Exploitation requires an authenticated account with canStream, an attacker-owned history row, an enabled Live plugin, and a victim restream row; the result is unauthorized broadcasting to the victim's YouTube, Facebook, or Twitch destination.
Summary
What happened
Missing authorization in AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 allows remote authenticated users to hijack destinations. The endpoint validates ownership of live_transmitions_history_id but passes an arbitrary live_restreams_id to Live::restream(), which loads another user's stream URL and key. Exploitation requires an authenticated account with canStream, an attacker-owned history row, an enabled Live plugin, and a victim restream row; the result is unauthorized broadcasting to the victim's YouTube, Facebook, or Twitch destination.
The record
- CVE
- CVE-2026-86720
- Published
- Sep 8, 2026
- Updated
- Sep 8, 2026
- Vendor
- WWBN
- Product
- AVideo
- Classifications
- CWE-862, CWE-639, T1656
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 8, 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?
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- Affected versionversion=0 <=c3edcc274c389816d434acadac07ee78eaf330c1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- GHSA authenticated HTTP proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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