CVE-2026-13055

Summary

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.

Affected Software

VendorProductVersion RangeStatus
MongoDBMongoDB Server7.0 < 7.0.39affected
MongoDBMongoDB Server8.0 < 8.0.28affected
MongoDBMongoDB Server8.2.0 < 8.2.12affected
MongoDBMongoDB Server8.3.0 < 8.3.7affected

Weaknesses

  • CWE-617: CWE-617: Reachable Assertion

References