CVE-2026-18704

An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This is due to an internal-use aggregation stage being reachable by external clients without an appropriate authorization check on its embedded operations.

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 HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/SERVER-129936	Vendor Advisory Issue Tracking

Configurations

Configuration 1 (hide)

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

History

16 Sep 2026, 15:19

Type	Values Removed	Values Added
First Time		Mongodb Mongodb mongodb
CPE		cpe:2.3:a:mongodb:mongodb::::::::
References	~~() https://jira.mongodb.org/browse/SERVER-129936 -~~	() https://jira.mongodb.org/browse/SERVER-129936 - Vendor Advisory, Issue Tracking

Information

Published : 2026-08-11 19:17

Updated : 2026-09-16 15:19

NVD link : CVE-2026-18704

Mitre link : CVE-2026-18704

CVE.ORG link : CVE-2026-18704

JSON object : View

Products Affected

mongodb

mongodb

CWE

CWE-862

Missing Authorization

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