High severity7.5NVD Advisory· Published Jun 9, 2026· Updated Jun 15, 2026

CVE-2026-9740

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MongoDB/MongoDB
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Range: >=7.0.0,<7.0.35
MongoDB/Serverllm-create
osv-coords
pkg:bitnami/mongodb
Range: >= 7.0.0, < 7.0.35

Patches

Vulnerability mechanics

References

jira.mongodb.org/browse/SERVER-125063nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000