High severity · published Sep 8, 2026
CVE-2026-86723
AVideo LoginControl PGP Authentication Bypass via verifyChallenge
8.1
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
through c3edcc274c389816d434acadac07ee78eaf330c1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86723
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-vmpj-f3mf-q4j2
www.vulncheck.com
https://www.vulncheck.com/advisories/avideo-logincontrol-pgp-authentication-bypass-via-verifychallenge
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