CVE-2026-35672 phpMyFAQ - Authentication Bypass via Empty API Token
Attackers can bypass authentication in phpMyFAQ by sending an empty API token, allowing them to create and modify FAQ entries without credentials.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-35672?
CVE-2026-35672 is a high-severity authentication bypass vulnerability in thorsten phpMyFAQ, published on 28 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
phpMyFAQ before 4.1.3 contains an authentication bypass vulnerability in API v4.0 where the default empty api.apiClientToken allows unauthenticated users to create and modify FAQ entries. Attackers can send an empty x-pmf-token header to bypass token validation and inject malicious content via POST endpoints /api/v4.0/faq/create, /api/v4.0/category, and /api/v4.0/question.
Weakness: CWE-1188
Which versions are affected by CVE-2026-35672?
4 open source packages ship an affected version, including thorsten/phpmyfaq and phpmyfaq/phpmyfaq.
| Package | Affected | Fixed in |
|---|---|---|
thorsten/phpmyfaq Packagist | All versions | 4.1.3 |
thorsten/phpmyfaq Packagist | All versions | 4.1.3 |
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.3 |
phpmyfaq/phpmyfaq Packagist | All versions | 4.1.3 |
How do I fix CVE-2026-35672?
Upgrade thorsten/phpmyfaq to 4.1.3 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-35672 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35672 exists.
Sources
Also known as GHSA-gp95-j463-vv28.