Is CVE-2026-120814 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120814 being exploited in the wild.

How severe is CVE-2026-120814?

High severity, with a CVSS score of 7.2, published 10 November 2026.

Which products and versions are affected?

MongoDB Server Prior to 8.3.16, 9.0.7, and 8.0.37.

Is there a fix for CVE-2026-120814?

Yes: fixed in 8.3.16, 9.0.7, 8.0.37. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-120814 attacked?

It is attacked over the network.

Am I affected by CVE-2026-120814?

Check whether you run MongoDB Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-120814: MongoDB Server privilege escalation in sharding subsystem

CVE-2026-120814 · Severity: high · CVSS 7.2 · Published 2026-11-10

MongoDB Server's sharding subsystem contains a privilege management flaw that allows authenticated users with shard-level administrative permissions to execute operations beyond their authorized scope, including modifications to cluster-wide security settings. An attacker exploiting this vulnerability could gain unauthorized access to and modify data across the entire MongoDB cluster.

Technologies: MongoDB Server. Vendors: MongoDB.

Quick answers

Is CVE-2026-120814 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120814 being exploited in the wild.
How severe is CVE-2026-120814?: High severity, with a CVSS score of 7.2, published 10 November 2026.
Which products and versions are affected?: MongoDB Server Prior to 8.3.16, 9.0.7, and 8.0.37.
Is there a fix for CVE-2026-120814?: Yes: fixed in 8.3.16, 9.0.7, 8.0.37. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120814 attacked?: It is attacked over the network.
Am I affected by CVE-2026-120814?: Check whether you run MongoDB Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 8.3.16, 9.0.7, 8.0.37

Technical details

An improper privilege management issue in MongoDB's sharding subsystem allows reprocessing of persisted internal coordination state with elevated internal authority without re-validation. Users holding shard-level administrative privileges can abuse this to carry out operations beyond their authorized scope, including cluster-wide security configuration changes. The attack requires an authenticated session directly against a cluster member.

Affected products

MongoDB MongoDB Server Prior to 8.3.16, 9.0.7, and 8.0.37

Timeline

2026-11-10: disclosed
2026-11-10: patched

References

https://jira.mongodb.org/browse/SERVER-133600

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