What is CVE-2026-86720?

CVE-2026-86720 is a high-severity vulnerability in Wwbn Avideo, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-09-08.

How severe is CVE-2026-86720?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Wwbn Avideo

CVE-2026-86720

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate ownership of live_restreams_id in resendRestreamer.json.php, allowing authenticated users with canStream to access other users' restream destinations. Attackers can broadcast their live stream to victim-configured restream destinations by supplying arbitrary live_restreams_id values, hijacking YouTube, Facebook, or Twitch streams using victim stream keys.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-09-08 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.0th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Wwbn Avideo

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

github.com/WWBN/AVideo/security/advisories/GHSA-7c8r-rj82-c8fv (vendor-advisory)
www.vulncheck.com/advisories/wwbn-avideo-missing-authorization-via-resendrestre… (third-party-advisory)

Frequently asked questions

What is CVE-2026-86720?: CVE-2026-86720 is a high-severity vulnerability in Wwbn Avideo, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-09-08.
How severe is CVE-2026-86720?: High severity. CVSS v3 base score is 8.1 out of 10.