Unauthorized Data Operations in MongoDB Server
CVE-2026-18696

7HIGH

Key Information:

Vendor

Mongodb
Status
Mongodb Server
Vendor
CVE Published:
11 August 2026

What is CVE-2026-18696?

A vulnerability exists in MongoDB Server's applyOps command that allows authenticated users with specific non-default privileges to execute data-definition operations, such as dropping or modifying collections. This occurs due to a mismatch in how the system determines the target collection for authorization checks and the execution of the actual operations. As a result, users may manipulate collections beyond their permitted scope, leading to potential data integrity issues.

Affected Version(s)

MongoDB Server 8.3.0 < 8.3.8

MongoDB Server 8.0 < 8.0.29

MongoDB Server 7.0 < 7.0.40

References

https://jira.mongodb.org/browse/SERVER-130139

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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