Vulnerability details

CVE-2026-85591

thorsten phpMyFAQ

phpMyFAQ before 4.1.8 Authentication Bypass via Unverified Password Change

CVSS 4.0

7.1High

Official description

phpMyFAQ versions before 4.1.8 contain an authentication bypass vulnerability in the user control panel API endpoint that allows authenticated attackers to change account passwords without verifying the current password. Attackers with session access can submit a PUT request to the user data update endpoint with only a CSRF token to silently change any user's password, including administrators, causing irreversible account takeover and victim lockout.

CVSS scores

Score	Version	Source	Vector
7.1High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
thorsten	phpMyFAQ	v < 4.1.8	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6r2c-694w-24qv vendor-advisory
https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-authentication-bypass-via-unverified-password-change third-party-advisory

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Details

Published: 2026-09-04
Last updated: 2026-09-10
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.51%

Probability of exploitation in 30 days

44.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-620
Unverified Password Change