Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-85591— phpMyFAQ before 4.1.8 Authentication Bypass via Unverified Password Change

Quick assessment

Affected
thorsten phpMyFAQ
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

phpMyFAQ 4.1.8 之前的版本在用户控制面板 API 端点中存在身份验证绕过漏洞，允许已认证的攻击者在未验证当前密码的情况下修改账户密码。拥有会话访问权限的攻击者可以通过向用户数据更新端点提交仅包含 CSRF 令牌的 PUT 请求，静默地更改任意用户（包括管理员）的密码，从而导致不可逆的账户接管和受害者被锁定。

CVSS 7.1 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
thorsten phpMyFAQ < 4.1.8 affected
4.1.8 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-85591

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
phpMyFAQ before 4.1.8 Authentication Bypass via Unverified Password Change
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未经验证的口令修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
thorsten phpMyFAQ 0 ~ 4.1.8 -

II. Public POCs for CVE-2026-85591

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-85591

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-85591 (2)

Same Patch Batch · thorsten · 2026-09-04 · 8 CVEs total

CVE-2026-85590 7.1 HIGH phpMyFAQ before 4.1.8 Authentication Bypass via Two-Factor Disable
CVE-2026-85586 6.9 MEDIUM phpMyFAQ before 4.1.8 CAPTCHA Bypass via store parameter
CVE-2026-85593 5.4 MEDIUM phpMyFAQ before 4.1.8 Stored XSS via html_entity_decode
CVE-2026-85587 5.3 MEDIUM phpMyFAQ before 4.1.8 Incorrect Authorization via Admin Pages
CVE-2026-85588 5.3 MEDIUM phpMyFAQ before 4.1.8 TOTP Secret Exposure via Data Export
CVE-2026-85589 5.3 MEDIUM phpMyFAQ before 4.2.0-alpha.2 Missing Authorization via Dashboard API
CVE-2026-85592 3.7 LOW phpMyFAQ before 4.1.8 Authorization Bypass via question/create

IV. Related Vulnerabilities

Same product: phpMyFAQ
Same vendor: thorsten
Same weakness: CWE-620

V. Comments for CVE-2026-85591

No comments yet

Leave a comment