CVE-2026-82058

A flaw in MongoDB's JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server. When a BSON document containing an array with a malformed numeric field name fails a $jsonSchema items type constraint, the error generation path performs unsafe numeric conversion on the user-controlled field name without proper exception handling, resulting in an uncaught exception that terminates the server process. This is possible because incoming wire protocol BSON validation does not enforce that array element field names are valid, in-range numeric indices.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

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-130926	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, 20:35

Type	Values Removed	Values Added
First Time		Mongodb Mongodb mongodb
References	~~() https://jira.mongodb.org/browse/SERVER-130926 -~~	() https://jira.mongodb.org/browse/SERVER-130926 - Vendor Advisory, Issue Tracking
CPE		cpe:2.3:a:mongodb:mongodb:::::-:::*

Information

Published : 2026-09-08 17:18

Updated : 2026-09-16 20:35

NVD link : CVE-2026-82058

Mitre link : CVE-2026-82058

CVE.ORG link : CVE-2026-82058

JSON object : View

Products Affected

mongodb

mongodb

CWE

CWE-248

Uncaught Exception

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