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CVE-2026-82059 Details

Description

An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://jira.mongodb.org/browse/SERVER-130571	[email protected]	Vendor AdvisoryIssue Tracking

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-617	Reachable Assertion	[email protected]

Affected Products

Product	Versions
mongodb mongodb	>= 7.0.0, < 7.0.41 >= 8.0.0, < 8.0.30 >= 8.3.0, < 8.3.9
CPE cpe:2.3:a:mongodb:mongodb:::::-:::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 16, 2026	Initial Analysis	[email protected]
Sep 8, 2026	CVE Modified	CISA-ADP
Sep 8, 2026	New CVE Received	[email protected]