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CVE-2026-24420— phpMyFAQ: Attachment download allowed without dlattachment right (broken access control)

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及之前版本存在访问控制错误漏洞，该漏洞源于权限检查不全面，可能导致未经授权的用户下载FAQ附件。

CVSS 6.5 · Medium EPSS 0.46% · P38
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I. Basic Information for CVE-2026-24420

Vulnerability Information
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Vulnerability Title
phpMyFAQ: Attachment download allowed without dlattachment right (broken access control)
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below allow an authenticated user without the dlattachment permission to download FAQ attachments due to a incomprehensive permissions check. The presence of a right key is improperly validated as proof of authorization in attachment.php. Additionally, the group and user permission logic contains a flawed conditional expression that may allow unauthorized access. This issue has been fixed in version
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
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
phpMyFAQ 访问控制错误漏洞
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及之前版本存在访问控制错误漏洞，该漏洞源于权限检查不全面，可能导致未经授权的用户下载FAQ附件。
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-2026-24420

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III. Intelligence Information for CVE-2026-24420

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Vendor Advisories for CVE-2026-24420 (1)

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

CVE-2026-24421 6.5 MEDIUM phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user
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-284

V. Comments for CVE-2026-24420

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