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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-24421— phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user

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是Thorsten Rinne个人开发者的一个多语言、完全由数据库驱动的常见问题解答系统。 phpMyFAQ 4.0.16及之前版本存在安全漏洞，该漏洞源于授权逻辑缺陷，可能导致非管理员用户触发配置备份并获取其路径。

CVSS 6.5 · Medium EPSS 1.77% · P77

Public Exploits 1

ExploitDB · 1 EDB-52523 [webapps]

Possible ATT&CK Techniques 2 AI

T1530.001 T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-24421

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 missing authorization exposes /api/setup/backup to any authenticated user
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
phpMyFAQ 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
phpMyFAQ是Thorsten Rinne个人开发者的一个多语言、完全由数据库驱动的常见问题解答系统。 phpMyFAQ 4.0.16及之前版本存在安全漏洞，该漏洞源于授权逻辑缺陷，可能导致非管理员用户触发配置备份并获取其路径。
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 < 4.0.17 -

II. Public POCs for CVE-2026-24421

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-24421

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-24421 (1)

Same Patch Batch · thorsten · 2026-01-24 · 3 CVEs total

CVE-2026-24420 6.5 MEDIUM phpMyFAQ: Attachment download allowed without dlattachment right (broken access control)
CVE-2026-24422 5.3 MEDIUM phpMyFAQ: Public API endpoints expose emails and invisible questions

IV. Related Vulnerabilities

Same product: phpMyFAQ
Same vendor: thorsten
Same weakness: CWE-862

V. Comments for CVE-2026-24421

No comments yet

Leave a comment