CVE-2026-34729: phpMyFAQ: Stored XSS via Regex Bypass in Filter::removeAttributes()

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-02 · updated 2026-10-25
Weakness: CWE-79

Description

phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, there is a stored XSS vulnerability via Regex Bypass in Filter::removeAttributes(). This issue has been patched in version 4.1.1.

Affected products

thorsten phpMyFAQ: before 4.1.1 — fixed in 4.1.1

How to fix

Upgrade to a fixed version: thorsten phpMyFAQ 4.1.1. Check the vendor advisory for mitigations.

References

https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-cv2g-8cj8-vgc7

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