CVE-2026-18696

Improper Authorization in MongoDB applyOps Command Handling Allows Unauthorized DDL Operations on Collections

CVE-2026-18696 is fixed in MongoDB on 1 platform by MongoDB 8.3.11 (version 8.3.11), released September 9, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.0
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0040
34th percentile

An issue in MongoDB Server's applyOps command could allow an authenticated user with specific non-default privileges to perform certain data-definition operations, such as dropping or modifying collections, against collections they do not have permission to manipulate. This is due to an inconsistency in how the target collection is determined between the authorization check and the actual operation.

Where it's fixed

ProductFixed inFixReleased
Windows apps
MongoDB 8.3.11 MongoDB 8.3.11 Sep 9, 2026

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