CVE-2026-9740
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Jun 09, 2026
Vendor
unknown
Description
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.