CVE-2026-8223 — Open5GS Denial of Service

title: CVE-2026-8223 - Open5GS sm-policies Denial of Service
id: scw-2026-05-10-ai-1
status: experimental
level: critical
description: |
  Detects attempts to exploit CVE-2026-8223 by targeting the sm-policies endpoint with a specific function call ('discover_and_send') via an HTTP POST request, which can lead to a denial of service in Open5GS versions up to 2.7.7.
author: SCW Feed Engine (AI-generated)
date: 2026-05-10
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-8223/
tags:
  - attack.impact
  - attack.t1499
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/sm-policies'
      cs-method:
          - 'POST'
      cs-uri-query|contains:
          - 'discover_and_send'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse