Medium severity · published Aug 19, 2026
CVE-2026-76209
phpMyFAQ before v4.1.6 Registration Bypass via API
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · thorsten
before 4.1.6 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76209
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76209
Exploit
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-h7q4-qgc4-c9vm
Third Party Advisory
https://www.vulncheck.com/advisories/phpmyfaq-before-registration-bypass-via-api
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