CVE-2026-6914 — Computing the MD5 checksum of a malformed BSON object under

title: MongoDB BSON MD5 Checksum Denial of Service Attempt — CVE-2026-6914
id: scw-2026-04-29-ai-1
status: experimental
level: high
description: |
  Detects attempts to exploit CVE-2026-6914 by sending a malformed BSON object containing an MD5 checksum calculation request to a MongoDB server. This specific pattern targets the vulnerable API endpoint and the characteristic payload structure that triggers the denial of service vulnerability.
author: SCW Feed Engine (AI-generated)
date: 2026-04-29
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-6914/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/api/v1/users'
      cs-method|exact:
          - 'POST'
      cs-uri-query|contains:
          - '{"$md5": "'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse