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CVE-2026-34728— phpMyFAQ: Path Traversal - Arbitrary File Deletion in MediaBrowserController

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.

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 4.1.1之前版本存在安全漏洞，该漏洞源于MediaBrowserController::index方法处理文件删除时未验证路径遍历，且未验证CSRF令牌，可能导致任意文件删除和跨站请求伪造攻击。

CVSS 8.7 · High EPSS 0.79% · P55
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I. Basic Information for CVE-2026-34728

Vulnerability Information
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Vulnerability Title
phpMyFAQ: Path Traversal - Arbitrary File Deletion in MediaBrowserController
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the MediaBrowserController::index() method handles file deletion for the media browser. When the fileRemove action is triggered, the user-supplied name parameter is concatenated with the base upload directory path without any path traversal validation. The FILTER_SANITIZE_SPECIAL_CHARS filter only encodes HTML special characters (&, ', ", <, >) and characters with ASCII value < 32, and does not prevent directory traversal sequences like ../. Additionally, the endpoint does not validate CSRF tokens, making it exploitable via CSRF attacks. This issue has been patched in version 4.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
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 4.1.1之前版本存在安全漏洞，该漏洞源于MediaBrowserController::index方法处理文件删除时未验证路径遍历，且未验证CSRF令牌，可能导致任意文件删除和跨站请求伪造攻击。
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 < 4.1.1 -

II. Public POCs for CVE-2026-34728

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8948 chars
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III. Intelligence Information for CVE-2026-34728

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Vendor Advisories for CVE-2026-34728 (1)

Same Patch Batch · thorsten · 2026-04-02 · 5 CVEs total

CVE-2026-34729 6.1 MEDIUM phpMyFAQ: Stored XSS via Regex Bypass in Filter::removeAttributes()
CVE-2026-34974 5.4 MEDIUM phpMyFAQ: SVG Sanitizer Bypass via HTML Entity Encoding leads to Stored XSS and Privilege
CVE-2026-32629 phpMyFAQ: Stored XSS via Unsanitized Email Field in Admin FAQ Editor
CVE-2026-34973 phpMyFAQ has a LIKE Wildcard Injection in Search.php — Unescaped % and _ Metacharacters En

IV. Related Vulnerabilities

Same product: phpMyFAQ
Same vendor: thorsten
Same weakness: CWE-22

V. Comments for CVE-2026-34728

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