CVE-2026-86723
AVideo LoginControl PGP Authentication Bypass via verifyChallenge
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.
INFO
Published Date :
Sept. 8, 2026, 3:13 p.m.
Last Modified :
Sept. 8, 2026, 3:13 p.m.
Remotely Exploit :
Yes !
Source :
VulnCheck
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 |
Solution
- Use strict comparison (===) for session values.
- Review all loose comparisons against session data.
- Update AVideo to the latest secure version.
- Test authentication flows thoroughly.
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CVE-2026-86723 vulnerability anywhere in the article.