CVE-2026-85586

phpMyFAQ versions before 4.1.8 fail to validate CAPTCHA when the store parameter is set to 'now' in question submission requests. Unauthenticated attackers can bypass CAPTCHA protection and submit unlimited questions directly, causing database pollution and triggering outgoing mail notifications.

Score

CVSS 4.0 6.9 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-09-04

Last modified

2026-09-10

Weaknesses

CWE-799

Affected products

• Phpmyfaq (Phpmyfaq)

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-72vj-pvm4-mm7x
• https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-captcha-bypass-via-store-parameter