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.
Published: 2026-08-11
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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History

Tue, 11 Aug 2026 18:45:00 +0000

Type Values Removed Values Added
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.
Title Use-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Potential Remote Code Execution
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-08-11T18:34:37.836Z

Reserved: 2026-08-03T15:53:46.316Z

Link: CVE-2026-18706

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-11T19:17:25.360

Modified: 2026-08-11T19:17:25.360

Link: CVE-2026-18706

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses