CVE-2026-42404 — Apache Neethi does not impose any restrictions on URIs when

title: Apache Neethi PolicyReference URI Dereference - CVE-2026-42404
id: scw-2026-05-01-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-42404 by observing web requests that include '/policy?uri=' in the URI and attempt to dereference external URIs using HTTP or HTTPS protocols. This indicates a potential attempt to abuse the PolicyReference API in Apache Neethi to fetch remote policies from arbitrary locations, which could lead to SSRF or other malicious actions.
author: SCW Feed Engine (AI-generated)
date: 2026-05-01
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-42404/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/policy?uri='
      cs-uri-query|contains:
          - 'http://'
          - 'https://'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse