CVE-2026-89252 json
AVideo Missing Authorization in addLiveLink.php LiveLink Update
published 2mo ago modified last mo. also EUVD-2026-76064 , GHSA-m2c6-f5ww-j26v
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository WWBN/AVideo. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to verify ownership in addLiveLink.php when updating LiveLinks, allowing authenticated users to modify other users' links. A canStream user can overwrite another user's LiveLink HLS source and metadata by supplying an existing linkId, redirecting viewers to attacker-controlled media.
Is CVE-2026-89252 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/WWBN/AVideo/security/advisories/GHSA-m2c6-f5ww-j26v referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- WWBN AVideo
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/WWBN/AVideo/security/advisories/GHSA-m2c6-f5ww-j26v
vendor-advisory, exploit, advisory
-
vulncheck.com
/advisories/avideo-missing-authorization-in-addlivelink-php-livelink-update
third-party-advisory
Sources
- CVE List CVE-2026-89252
- NVD CVE-2026-89252
- Maintainer advisory GHSA-m2c6-f5ww-j26v
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of WWBN/AVideo published their own advisory on GitHub. Reviewed sources take precedence over it.