An improper privilege management issue in the sharding subsystem of MongoDB Server may allow a user holding certain shard-level administrative privileges to cause persisted internal coordination state to be reprocessed with elevated internal authority. Because that state is trusted rather than re-validated, operations may be carried out beyond the user's authorized scope, including changes to cluster-wide security configuration. Successful triggering this issue requires an authenticated session directly against a cluster member and can result in unauthorized access to and modification of data across the cluster.
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Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/SERVER-133600 |
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History
Tue, 10 Nov 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An improper privilege management issue in the sharding subsystem of MongoDB Server may allow a user holding certain shard-level administrative privileges to cause persisted internal coordination state to be reprocessed with elevated internal authority. Because that state is trusted rather than re-validated, operations may be carried out beyond the user's authorized scope, including changes to cluster-wide security configuration. Successful triggering this issue requires an authenticated session directly against a cluster member and can result in unauthorized access to and modification of data across the cluster. | |
| Title | MultiUpdateCoordinator state replay lets a shard administrator create a persistent cluster root user | |
| Weaknesses | CWE-250 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mongodb
Published:
Updated: 2026-11-10T20:12:13.822Z
Reserved: 2026-11-02T22:54:26.669Z
Link: CVE-2026-120814
No data.
Status : Received
Published: 2026-11-10T20:18:52.047
Modified: 2026-11-10T20:18:52.047
Link: CVE-2026-120814
No data.
OpenCVE Enrichment
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Weaknesses