Auth bypass in Wwbn Avideo
CVE-2026-86723
AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 contains an authentication bypass vulnerability in LoginControl::verifyChallenge() that uses loose comparison (==) instead of strict comparison (===) against unset session values. Attackers with only a password can submit an empty request to verifyChallenge.json.php to bypass PGP two-factor authentication and gain full authenticated access.
Vulnerability class: Broken Authentication
Published · last modified .
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: 0.005 (40.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-vmpj-f3mf-q4j2 (vendor-advisory)
- www.vulncheck.com/advisories/avideo-logincontrol-pgp-authentication-bypass-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86723?
- CVE-2026-86723 is a high-severity vulnerability in Wwbn Avideo, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-09-08.
- How severe is CVE-2026-86723?
- High severity. CVSS v3 base score is 8.1 out of 10.