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CVE-2026-46363— phpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass

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 4.1.2之前版本存在跨站脚本漏洞，该漏洞源于FAQ创建和更新端点通过编码解码循环绕过清理，可能导致具有FAQ_ADD权限的攻击者通过问题或答案参数注入恶意脚本标签，在FAQ内容使用raw Twig过滤器渲染时在每个访问者浏览器中执行。

CVSS 5.4 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 2

VendorProduct Version RangeStatus
thorsten phpmyfaq < 4.1.2 affected
4.1.2 unaffected
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I. Basic Information for CVE-2026-46363

Vulnerability Information
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Vulnerability Title
phpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQ_ADD permission to inject malicious script tags via question or answer parameters, which execute in every visitor's browser when FAQ content is rendered with the raw Twig filter.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
phpMyFAQ 跨站脚本漏洞
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 4.1.2之前版本存在跨站脚本漏洞，该漏洞源于FAQ创建和更新端点通过编码解码循环绕过清理，可能导致具有FAQ_ADD权限的攻击者通过问题或答案参数注入恶意脚本标签，在FAQ内容使用raw Twig过滤器渲染时在每个访问者浏览器中执行。
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 ~ 4.1.2 -

II. Public POCs for CVE-2026-46363

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III. Intelligence Information for CVE-2026-46363

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Vendor Advisories for CVE-2026-46363 (2)

Same Patch Batch · thorsten · 2026-05-15 · 13 CVEs total

CVE-2026-46364 9.8 CRITICAL phpMyFAQ - SQL Injection via User-Agent Header in BuiltinCaptcha
CVE-2026-45010 9.1 CRITICAL phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
CVE-2026-46367 7.6 HIGH phpMyFAQ - Stored XSS via Utils::parseUrl() in Comment Rendering
CVE-2026-46359 7.5 HIGH phpMyFAQ - SQL Injection in CurrentUser::setTokenData via Unescaped OAuth Token Fields
CVE-2026-46366 7.5 HIGH phpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission Bypas
CVE-2026-46361 6.9 MEDIUM phpMyFAQ - Stored Cross-Site Scripting via raw Filter in search.twig
CVE-2026-45008 6.5 MEDIUM phpMyFAQ - Path Traversal in Client::deleteClientFolder via URL Parameter
CVE-2026-46362 6.5 MEDIUM phpMyFAQ - Authorization Bypass in Admin Pages via Non-Terminating Permission Check
CVE-2026-46360 5.4 MEDIUM phpMyFAQ - Stored XSS via Entity Decoding Depth Limit Bypass in SVG Sanitizer
CVE-2026-46365 5.4 MEDIUM phpMyFAQ - Missing Authorization in Tag Deletion Endpoint
CVE-2026-45007 4.3 MEDIUM phpMyFAQ - Missing Permission Check on 12 Configuration API Endpoints Allows Information D
CVE-2026-45009 4.3 MEDIUM phpMyFAQ - Insufficient Authorization Check in Admin API Endpoints

IV. Related Vulnerabilities

Same product: phpmyfaq
Same vendor: thorsten
Same weakness: CWE-79

V. Comments for CVE-2026-46363

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