CVE-2026-18706

HIGH

Use-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Potential Remote Code Execution

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-18706 has a selected CVSS score of 7.5 (high).

Description

An issue in MongoDB Server's $graphLookup aggregation stage could allow an authenticated user able to issue aggregation and memory-management commands to cause an internal reference to be used after the underlying memory has been freed. This could result in a server crash or, potentially, execution of unintended code.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 11, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

MongoDB Server

Browse MongoDB / MongoDB Server

Default status: unaffected

CVE List8.3.0 to < 8.3.8affected

References

2