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.
History

Fri, 24 Jul 2026 07:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 23 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb mongodb Server
Vendors & Products Mongodb
Mongodb mongodb Server

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
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:Y/R:A'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published: 2026-07-22T19:22:54.189Z

Updated: 2026-07-23T14:17:59.153Z

Reserved: 2026-06-23T17:59:56.769Z

Link: CVE-2026-13055

cve-icon Vulnrichment

Updated: 2026-07-23T14:17:55.850Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-22T20:16:43.220

Modified: 2026-08-05T15:13:31.250

Link: CVE-2026-13055

cve-icon Redhat

No data.