CVE-2026-6817 — Cross-Site Scripting (XSS)

title: CVE-2026-6817 - Quiz Maker XSS via rate_reason parameter
id: scw-2026-05-02-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-6817 by looking for the specific WordPress AJAX endpoint and the vulnerable 'rate_reason' parameter, combined with a common XSS script tag pattern. This indicates a potential Stored XSS attack against the Quiz Maker by AYS plugin.
author: SCW Feed Engine (AI-generated)
date: 2026-05-02
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-6817/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/wp-admin/admin-ajax.php'
      cs-uri-query|contains:
          - 'action=ays_quiz_maker_save_quiz'
      cs-uri-query|contains:
          - 'rate_reason='
  selection_payload:
      cs-uri-query|contains:
          - '<script>'
      condition: selection AND selection_payload
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse