CVE-2026-13055
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Jul 22, 2026
Vendor
unknown
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.