CVE-2026-3340 — Server-Side Request Forgery

title: CVE-2026-3340 - IBM Langflow SSRF via Unauthorized Request
id: scw-2026-04-30-ai-1
status: experimental
level: high
description: |
  Detects potential SSRF exploitation of CVE-2026-3340 in IBM Langflow by looking for POST requests to '/api/v1/process' that contain a 'url=' parameter in the query string. This pattern is indicative of an attacker attempting to force the Langflow server to make requests to arbitrary external or internal resources.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-3340/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/api/v1/process'
      cs-method:
          - 'POST'
      cs-uri-query|contains:
          - 'url='
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse