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CVE-2026-76213— phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle

Quick assessment

Affected
thorsten phpMyFAQ
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Thorsten Rinne phpMyFAQ是Thorsten Rinne个人开发者的一款常见问题解答管理系统。 Thorsten Rinne phpMyFAQ 4.1.7之前版本存在授权问题漏洞，该漏洞源于双因素认证步骤中失败计数器为会话作用域且每次成功密码重新认证时重置，导致攻击者可通过获取新会话cookie并重复重新认证绕过五次尝试限制，实现无限制的TOTP代码猜测。

CVSS 7.4 · High EPSS 0.28% · P21

Affected Version Matrix 2

VendorProduct Version RangeStatus
thorsten phpMyFAQ < 4.1.7 affected
4.1.7 unaffected
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I. Basic Information for CVE-2026-76213

Vulnerability Information
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Vulnerability Title
phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ before 4.1.7 contains a brute-force vulnerability in the two-factor authentication step where the failure counter is session-scoped and reset on each successful password re-authentication. Attackers with a valid password can bypass the five-attempt limit by obtaining a fresh session cookie and repeatedly re-authenticating to reset the counter, enabling unbounded TOTP code guessing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Thorsten Rinne phpMyFAQ 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Thorsten Rinne phpMyFAQ是Thorsten Rinne个人开发者的一款常见问题解答管理系统。 Thorsten Rinne phpMyFAQ 4.1.7之前版本存在授权问题漏洞，该漏洞源于双因素认证步骤中失败计数器为会话作用域且每次成功密码重新认证时重置，导致攻击者可通过获取新会话cookie并重复重新认证绕过五次尝试限制，实现无限制的TOTP代码猜测。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
thorsten phpMyFAQ 0 ~ 4.1.7 -

II. Public POCs for CVE-2026-76213

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 9352 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-76213

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Vendor Advisories for CVE-2026-76213 (2)

Same Patch Batch · thorsten · 2026-08-19 · 14 CVEs total

CVE-2026-75918 8.8 HIGH phpMyFAQ before 4.1.7 Authentication Bypass via Tracking File
CVE-2026-76208 8.2 HIGH phpMyFAQ 3.1.0 through 4.1.6 Authentication Bypass via LDAP
CVE-2026-76205 8.1 HIGH phpMyFAQ before 4.1.7 SQL Injection via Glossary
CVE-2026-76207 8.1 HIGH phpMyFAQ before 4.1.7 2FA Bypass via Remember-Me Cookie
CVE-2026-76214 7.4 HIGH phpMyFAQ before 4.1.7 WebAuthn Replay Attack via Challenge
CVE-2026-76210 6.5 MEDIUM phpMyFAQ before v4.1.6 Local File Disclosure via PDF Export
CVE-2026-75919 5.3 MEDIUM phpMyFAQ before 4.1.7 Authentication Bypass via Setup API
CVE-2026-75920 5.3 MEDIUM phpMyFAQ before 4.1.6 Information Disclosure via Backup ZIP
CVE-2026-76206 5.3 MEDIUM phpMyFAQ before 4.1.7 Information Disclosure via PDF Export
CVE-2026-76215 5.3 MEDIUM phpMyFAQ before 4.1.7 Missing Authorization via child resources
CVE-2026-76212 5.3 MEDIUM phpMyFAQ before 4.1.7 LIKE Wildcard Injection via PostgreSQL
CVE-2026-76209 4.3 MEDIUM phpMyFAQ before v4.1.6 Registration Bypass via API
CVE-2026-76211 4.3 MEDIUM phpMyFAQ before 4.1.7 Information Disclosure via Admin API

IV. Related Vulnerabilities

Same product: phpMyFAQ
Same vendor: thorsten
Same weakness: CWE-307

V. Comments for CVE-2026-76213

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