CVE-2026-120814 - MultiUpdateCoordinator state replay lets a shard administrator create a persistent cluster root user

CVE-2026-120814 - MultiUpdateCoordinator state replay lets a shard administrator create a persistent cluster root user

https://cvefeed.io/rssfeed/latest.atom / Tue, 11/10/2026 - 22:52
CVE ID :CVE-2026-120814
Published : Nov. 10, 2026, 8:12 p.m. | 16 minutes ago
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.
Severity: 7.5 | HIGH
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