CVE-2026-24573 — Themeisle Visualizer Cross-Site Scripting (XSS)

title: CVE-2026-24573 - Themeisle Visualizer Stored XSS Attempt via Malicious Input
id: scw-2026-05-20-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-24573 by sending a known XSS payload via the admin-ajax.php endpoint when saving Visualizer settings. This indicates a potential Stored XSS attack against the Themeisle Visualizer plugin.
author: SCW Feed Engine (AI-generated)
date: 2026-05-20
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-24573/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/wp-admin/admin-ajax.php'
      cs-uri-query|contains:
          - 'action=visualizer_save'
      cs-uri-query|contains:
          - '<script>alert(document.domain)</script>'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse