CVE-2026-34729 phpMyFAQ: Stored XSS via Regex Bypass in Filter::removeAttributes()
Stored XSS in phpMyFAQ allows attackers to inject malicious scripts via regex bypass, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-34729?
CVE-2026-34729 is a medium-severity cross-site scripting vulnerability in Phpmyfaq Phpmyfaq, published on 2 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-34729?
2 open source packages ship an affected version, including phpmyfaq/phpmyfaq. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.1 |
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.1 |
Products include Phpmyfaq Phpmyfaq.
How do I fix CVE-2026-34729?
Upgrade phpmyfaq/phpmyfaq to 4.1.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-34729 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34729 exists.
Other vulnerabilities in Phpmyfaq Phpmyfaq
- CVE-2023-0310 Cross-site Scripting (XSS) - Stored in thorsten/phpmyfaq
- CVE-2022-4407 Cross-site Scripting (XSS) - Reflected in thorsten/phpmyfaq
- CVE-2017-11187 Security feature bypass in n/a
- CVE-2026-76213 phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle
- CVE-2026-76214 phpMyFAQ before 4.1.7 WebAuthn Replay Attack via Challenge
Sources
Also known as GHSA-cv2g-8cj8-vgc7.