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Vulnerability details: VCID-rrz3-kbbd-eyhq
Vulnerability ID VCID-rrz3-kbbd-eyhq
Aliases CVE-2026-45010
GHSA-9pq7-mfwh-xx2j
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-307 Improper Restriction of Excessive Authentication Attempts
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00193 https://api.first.org/data/v1/epss?cve=CVE-2026-45010
epss 0.00193 https://api.first.org/data/v1/epss?cve=CVE-2026-45010
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-9pq7-mfwh-xx2j
cvssv3.1 9.1 https://github.com/thorsten/phpMyFAQ
generic_textual CRITICAL https://github.com/thorsten/phpMyFAQ
cvssv3.1 9.1 https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
cvssv3.1_qr CRITICAL https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
cvssv4 9.3 https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
generic_textual CRITICAL https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
ssvc Track* https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2026-45010
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2026-45010
cvssv3.1 9.1 https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
cvssv4 9.3 https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
generic_textual CRITICAL https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
ssvc Track* https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-45010
https://github.com/thorsten/phpMyFAQ
https://nvd.nist.gov/vuln/detail/CVE-2026-45010
GHSA-9pq7-mfwh-xx2j https://github.com/advisories/GHSA-9pq7-mfwh-xx2j
GHSA-9pq7-mfwh-xx2j https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/thorsten/phpMyFAQ
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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 Found at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-05-15T22:11:39Z/ Found at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-9pq7-mfwh-xx2j
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-45010
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
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 Found at https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-05-15T22:11:39Z/ Found at https://www.vulncheck.com/advisories/phpmyfaq-unauthenticated-two-factor-authentication-brute-force-via-admin-check-endpoint
Exploit Prediction Scoring System (EPSS)
Percentile 0.41063
EPSS Score 0.00193
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:44:04.860102+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/45xxx/CVE-2026-45010.json 38.6.0