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CVE-2026-46364— phpMyFAQ - SQL Injection via User-Agent Header in BuiltinCaptcha

CVSS 9.8 · Critical EPSS 0.05% · P15

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProductVersion RangeStatus
thorstenphpmyfaq< 4.1.2affected
4.1.2unaffected
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I. Basic Information for CVE-2026-46364

Vulnerability Information
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Vulnerability Title
phpMyFAQ - SQL Injection via User-Agent Header in BuiltinCaptcha
Source: NVD (National Vulnerability Database)
Vulnerability Description
phpMyFAQ before 4.1.2 contains an unauthenticated SQL injection vulnerability in BuiltinCaptcha::garbageCollector() and BuiltinCaptcha::saveCaptcha() methods that interpolate unsanitized User-Agent headers into DELETE and INSERT queries. Unauthenticated attackers can exploit the public GET /api/captcha endpoint by crafting malicious User-Agent headers to perform time-based blind SQL injection, extracting sensitive data including user credentials, admin tokens, and SMTP credentials from the database.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
thorstenphpmyfaq 0 ~ 4.1.2 -

II. Public POCs for CVE-2026-46364

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 11543 chars
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III. Intelligence Information for CVE-2026-46364

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

CVE-2026-450109.1 CRITICALphpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
CVE-2026-463677.6 HIGHphpMyFAQ - Stored XSS via Utils::parseUrl() in Comment Rendering
CVE-2026-463597.5 HIGHphpMyFAQ - SQL Injection in CurrentUser::setTokenData via Unescaped OAuth Token Fields
CVE-2026-463667.5 HIGHphpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission Bypas
CVE-2026-463616.9 MEDIUMphpMyFAQ - Stored Cross-Site Scripting via raw Filter in search.twig
CVE-2026-450086.5 MEDIUMphpMyFAQ - Path Traversal in Client::deleteClientFolder via URL Parameter
CVE-2026-463626.5 MEDIUMphpMyFAQ - Authorization Bypass in Admin Pages via Non-Terminating Permission Check
CVE-2026-463605.4 MEDIUMphpMyFAQ - Stored XSS via Entity Decoding Depth Limit Bypass in SVG Sanitizer
CVE-2026-463635.4 MEDIUMphpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass
CVE-2026-463655.4 MEDIUMphpMyFAQ - Missing Authorization in Tag Deletion Endpoint
CVE-2026-450074.3 MEDIUMphpMyFAQ - Missing Permission Check on 12 Configuration API Endpoints Allows Information D
CVE-2026-450094.3 MEDIUMphpMyFAQ - Insufficient Authorization Check in Admin API Endpoints

IV. Related Vulnerabilities

Same product: phpmyfaq
Same vendor: thorsten
Same weakness: CWE-89

V. Comments for CVE-2026-46364

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