CVE-2026-4502 — Arbitrary File Access

title: CVE-2026-4502 - Langflow Arbitrary File Write via Directory Traversal
id: scw-2026-04-30-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-4502 in IBM Langflow Desktop by looking for POST requests containing directory traversal sequences ('/../') in the URI, which are indicative of an attacker trying to write arbitrary files to the system.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-4502/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/../'
      cs-method:
          - 'POST'
      sc-status:
          - '200'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse