CVE-2026-76209 phpMyFAQ before v4.1.6 Registration Bypass via API
Attackers can bypass registration restrictions in phpMyFAQ API endpoints to create unauthorized user accounts when registration is disabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76209?
CVE-2026-76209 is a medium-severity missing authorization vulnerability in Phpmyfaq Phpmyfaq, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, allowing attackers to create user accounts when registration is disabled. Attackers can bypass the registration restriction by submitting requests to POST /api/register or POST /api/v3.1/register endpoints, which do not check the configuration flag enforced by the HTML registration page.
Weakness: CWE-862
Which versions are affected by CVE-2026-76209?
It affects 1 product.
Products include Phpmyfaq Phpmyfaq.
How do I fix CVE-2026-76209?
No fix has been published for CVE-2026-76209 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-76209 being exploited?
There is no known exploitation of CVE-2026-76209 in the wild and no public exploit code.
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-fh25-jpw4-vg4p, GHSA-h7q4-qgc4-c9vm.