CVE-2026-18712 — HIGH (8.1)

Vulnerability Description

An issue in MongoDB Server's Queryable Encryption maintenance operations could allow an authenticated user with privileges on one encrypted collection to cause unauthorized modification or destruction of data belonging to a different collection. This is due to insufficient validation of certain internal metadata references before they are used to perform operations on other namespaces.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-863

References

https://jira.mongodb.org/browse/SERVER-130633

FAQ

What is CVE-2026-18712?

CVE-2026-18712 is a vulnerability with a CVSS score of 8.1 (HIGH). An issue in MongoDB Server's Queryable Encryption maintenance operations could allow an authenticated user with privileges on one encrypted collection to cause unauthorized modification or destruction...

How severe is CVE-2026-18712?

CVE-2026-18712 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18712?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.