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.
References (2)
Core 2
Core References
Third Party Advisory third-party-advisory
GHSA Advisory GHSA-gp95-j463-vv28
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-gp95-j463-vv28
Third Party Advisory third-party-advisory
VulnCheck Advisory: phpMyFAQ - Authentication Bypass via Empty API Token
https://www.vulncheck.com/advisories/phpmyfaq-authentication-bypass-via-empty-api-token
Scores
CVSS v3
7.5
EPSS
0.0038
EPSS Percentile
29.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1188
Status
published
Products (4)
phpmyfaq/phpmyfaq
0 - 4.1.3Packagist
thorsten/phpMyFAQ
< 4.1.3
thorsten/phpmyfaq
0 - 4.1.3Packagist
thorsten/phpMyFAQ
4.1.3
Published
May 28, 2026
Tracked Since
May 28, 2026