Denial of Service Vulnerability in MongoDB Server for Authenticated Users
CVE-2026-18699

6MEDIUM

Key Information:

Vendor

Mongodb
Status
Mongodb Server
Vendor
CVE Published:
11 August 2026

What is CVE-2026-18699?

An issue has been identified in MongoDB Server's query planner that allows authenticated users with read-level privileges to craft specific queries that may cause the server process to terminate unexpectedly. This vulnerability can lead to a denial of service, affecting not only the server itself but also connected clients and ongoing operations. Users should review their query usage and apply necessary updates to mitigate potential risks.

Affected Version(s)

MongoDB Server 8.3.0 < 8.3.8

MongoDB Server 8.0 < 8.0.29

MongoDB Server 7.0 < 7.0.40

References

https://jira.mongodb.org/browse/SERVER-130266

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.