CVE-2026-43002 — OpenStack Horizon 25.6 And Vulnerability

title: CVE-2026-43002 - OpenStack Horizon Session Storage Exhaustion Attempt
id: scw-2026-05-05-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-43002 by targeting the OpenStack Horizon authentication endpoint with POST requests. This vulnerability allows unauthenticated users to exhaust session storage by repeatedly writing to it before authentication, potentially leading to a denial-of-service condition. This rule specifically looks for POST requests to the '/horizon/auth/' URI which is indicative of session interaction.
author: SCW Feed Engine (AI-generated)
date: 2026-05-05
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-43002/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/horizon/auth/'
      cs-method:
          - 'POST'
      sc-status:
          - '200'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse