CVE-2026-104004
6.5MediumPublished 13 Oct 2026 · NVD status: Received · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Impact
- High impact on availability
- Weakness
- CWE-476
Impact
Authenticated users with write access can crash the MongoDB Server process by inserting documents into collections with specific validators. This leads to a denial of service across the instance.
Root cause
A null pointer dereference occurs when evaluating certain stored validator expressions during document insertion.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Fix & remediation
Upgrade MongoDB Server once a patch is released by following SERVER-131412. As a workaround, audit and remove or avoid custom collection validators on write-accessible collections.
$ mongosh --eval 'db.version()'AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator. In some cases, this can cause the server process to stop running when a document is later inserted. The behavior can occur for authenticated users with write access.