CVE-2026-81523

A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The resulting impact is limited to incorrect schema selection, which may lead to limited disclosure or modification of information handled by the application.

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mongodb/libmongocrypt/releases/tag/1.20.3	Product
https://jira.mongodb.org/browse/MONGOCRYPT-977	Vendor Advisory Issue Tracking Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:mongodb:libmongocrypt:*:*:*:*:*:*:*:*

History

17 Sep 2026, 13:59

Type	Values Removed	Values Added
First Time		Mongodb Mongodb libmongocrypt
CPE		cpe:2.3:a:mongodb:libmongocrypt::::::::
References	~~() https://github.com/mongodb/libmongocrypt/releases/tag/1.20.3 -~~	() https://github.com/mongodb/libmongocrypt/releases/tag/1.20.3 - Product
References	~~() https://jira.mongodb.org/browse/MONGOCRYPT-977 -~~	() https://jira.mongodb.org/browse/MONGOCRYPT-977 - Vendor Advisory, Issue Tracking, Patch

Information

Published : 2026-08-27 20:18

Updated : 2026-09-17 13:59

NVD link : CVE-2026-81523

Mitre link : CVE-2026-81523

CVE.ORG link : CVE-2026-81523

JSON object : View

Products Affected

mongodb

libmongocrypt

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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