cvedb.io
CVE-2026-9740
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-06-09T23:17:03.437 · Last modified 2026-06-17T11:05:36.433

Summary

A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions, where each re-entry resets internal depth tracking.

Affected products

mongodb — mongodb

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.