CVE-2026-9740

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H                                    

Vulnerability Description

A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions, where each re-entry resets internal depth tracking.

Vulnerability Details

Published Date

June 09, 2026

Last Modified

June 15, 2026

CWE ID

CWE-674

Source

NVD

Vendor

mongodb

Product

mongodb

External References

https://jira.mongodb.org/browse/SERVER-125063

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