CVE-2026-82059

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/SERVER-130571	Vendor Advisory Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:mongodb:::::-:::*
	cpe:2.3:a:mongodb:mongodb:::::-:::*
	cpe:2.3:a:mongodb:mongodb:::::-:::*

History

16 Sep 2026, 20:36

Type	Values Removed	Values Added
First Time		Mongodb Mongodb mongodb
References	~~() https://jira.mongodb.org/browse/SERVER-130571 -~~	() https://jira.mongodb.org/browse/SERVER-130571 - Vendor Advisory, Issue Tracking
CPE		cpe:2.3:a:mongodb:mongodb:::::-:::*

Information

Published : 2026-09-08 17:18

Updated : 2026-09-16 20:36

NVD link : CVE-2026-82059

Mitre link : CVE-2026-82059

CVE.ORG link : CVE-2026-82059

JSON object : View

Products Affected

mongodb

mongodb

CWE

CWE-617

Reachable Assertion

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