CVE-2026-42586 — Netty is an asynchronous, event-driven network application

title: CVE-2026-42586 - Netty Redis CRLF Injection Attempt
id: scw-2026-05-13-ai-1
status: experimental
level: critical
description: |
  Detects attempts to exploit CVE-2026-42586 by looking for CRLF characters ('\r\n') within the query string of web requests. This indicates an attempt to inject commands into a Redis message processed by a vulnerable Netty Redis codec.
author: SCW Feed Engine (AI-generated)
date: 2026-05-13
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-42586/
tags:
  - attack.persistence
  - attack.t1505.003
logsource:
    category: webserver
detection:
  selection:
      cs-uri-query|contains:
          - '\r
  '
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse