CVE-2026-8752 — The Function Exec Of The File H2o-Core/Src/Main/Java/Water/R Improper Access Control

title: CVE-2026-8752 - H2O Rapids AstSetProperty Exec Improper Access Control
id: scw-2026-05-17-ai-1
status: experimental
level: critical
description: |
  This rule detects attempts to exploit CVE-2026-8752 by targeting the AstSetProperty primitive within the H2O Rapids 'exec' endpoint. The presence of 'AstSetProperty' in the query string alongside the '/rapids/exec' URI indicates a potential attempt to leverage the improper access control vulnerability for unauthorized execution.
author: SCW Feed Engine (AI-generated)
date: 2026-05-17
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-8752/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/rapids/exec'
      cs-uri-query|contains:
          - 'AstSetProperty'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse