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CVE-2026-45010

phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint

Published: May 15, 2026Updated: May 28, 2026 Sources: CVE List NVDCWE-307
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.3%
Top 74.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

phpMyFAQ before 4.1.2 contains an improper restriction of excessive authentication attempts vulnerability in the /admin/check endpoint, which accepts arbitrary user-id parameters without session binding or rate limiting. Unauthenticated attackers can brute-force any user's six-digit TOTP code by submitting POST requests with sequential token values, bypassing two-factor authentication to gain full administrative access.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-307

Affected Products

phpmyfaqthorsten
On-premWeb App
Web & CMS Plugins
thorstenindividual-devWeb & CMS Pluginsaka thorsten/phpmyfaq, phpmyfaq

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
github.com
https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
vulncheck.com

Timeline

Published
May 15, 2026
Last Updated
May 28, 2026

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