CVE-2026-13055

MediumCVSS 6.5/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

Vendor	Product	Versions
MongoDB	MongoDB Server	>= 7.0, < 7.0.39; >= 8.0, < 8.0.28; >= 8.2.0, < 8.2.12; >= 8.3.0, < 8.3.7

References

https://jira.mongodb.org/browse/SERVER-123081Vendor Advisory, Issue Tracking

Timeline

Published: Jul 22, 2026
Last modified: Oct 24, 2026
NVD status: Analyzed

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