High severity · published Sep 4, 2026
CVE-2026-85591
phpMyFAQ before 4.1.8 Authentication Bypass via Unverified Password Change
7.1
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · thorsten
before 4.1.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85591
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85591
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6r2c-694w-24qv
www.vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-authentication-bypass-via-unverified-password-change
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