CVE-2026-45010CWE-307

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

Critical · published May 15, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
46.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00567 · 46.3th percentile
Weakness
CWE-307 · Improper Restriction of Excessive Authentication Attempts
Published
2026-05-15T18:36Z
EPSS history
Timeline
  • 15 MAY 18:36Z
    phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
    cvelistv5