CVE-2026-88035

A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

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/CDRIVER-6416	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:c_driver::::::mongodb::*
	cpe:2.3:a:mongodb:c_driver::::::mongodb::*

History

16 Sep 2026, 18:08

Type	Values Removed	Values Added
First Time		Mongodb Mongodb c Driver
References	~~() https://jira.mongodb.org/browse/CDRIVER-6416 -~~	() https://jira.mongodb.org/browse/CDRIVER-6416 - Vendor Advisory
CPE		cpe:2.3:a:mongodb:c_driver::::::mongodb::*

Information

Published : 2026-09-10 19:17

Updated : 2026-09-16 18:08

NVD link : CVE-2026-88035

Mitre link : CVE-2026-88035

CVE.ORG link : CVE-2026-88035

JSON object : View

Products Affected

mongodb

c_driver

CWE

CWE-190

Integer Overflow or Wraparound

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