CVE-2026-6237 — Cross-Site Scripting (XSS)

title: WordPress Quick Table Plugin Stored XSS via qtbl shortcode 'style' attribute — CVE-2026-6237
id: scw-2026-05-12-ai-1
status: experimental
level: medium
description: |
  Detects attempts to exploit CVE-2026-6237 in the WordPress Quick Table plugin. This rule specifically looks for the 'qtbl' shortcode within the URI query, combined with the 'style=' attribute and a '<script>' tag, indicating a potential Stored XSS payload injection via the 'style' attribute. This targets the insufficient input sanitization and output escaping in versions up to 1.0.0.
author: SCW Feed Engine (AI-generated)
date: 2026-05-12
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-6237/
tags:
  - attack.execution
  - attack.t1059.001
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/wp-content/plugins/quick-table-builder/'
      cs-uri-query|contains:
          - 'qtbl'
      cs-uri-query|contains:
          - 'style='
      cs-uri-query|contains:
          - '<script>'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse