CVE-2026-13055 — MEDIUM (6.5)

Q: How severe is CVE-2026-13055?

CVE-2026-13055 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-13055?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.

Vulnerability Description

The `$_internalIndexKey` aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mongodb	Mongodb	>= 7.0.0, < 7.0.39

Related Weaknesses (CWE)

CWE-617

References

https://jira.mongodb.org/browse/SERVER-123081Vendor AdvisoryIssue Tracking

FAQ

What is CVE-2026-13055?

CVE-2026-13055 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The `$_internalIndexKey` aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, trigger...

How severe is CVE-2026-13055?

CVE-2026-13055 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13055?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.