CVE-2026-7043 — GreenCMS Unrestricted File Upload

title: CVE-2026-7043 - GreenCMS Unrestricted File Upload via pluginAddLocal
id: scw-2026-04-26-ai-1
status: experimental
level: high
description: |
  This rule detects attempts to exploit CVE-2026-7043 in GreenCMS. The vulnerability lies in the pluginAddLocal function, accessible via the '/index.php?m=admin&c=custom&a=pluginadd' endpoint. An attacker can exploit this by sending a POST request to this specific URI, allowing for unrestricted file uploads. This rule specifically looks for POST requests to this vulnerable URI, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-04-26
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-7043/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri-query|contains:
          - 'm=admin&c=custom&a=pluginadd'
      cs-method:
          - 'POST'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse