The `$_internalIndexKey` aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.
Metrics
Affected Vendors & Products
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References
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/SERVER-123081 |
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History
Wed, 22 Jul 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The `$_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. | |
| Title | Server crash via aggregation pipeline expression with compound wildcard index specification | |
| Weaknesses | CWE-617 | |
| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: mongodb
Published:
Updated: 2026-07-22T19:22:54.189Z
Reserved: 2026-06-23T17:59:56.769Z
Link: CVE-2026-13055
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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