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.
Published: 2026-06-09
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 15 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb mongodb
CPEs cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
Vendors & Products Mongodb mongodb

Wed, 10 Jun 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb mongodb Server
Vendors & Products Mongodb
Mongodb mongodb Server

Tue, 09 Jun 2026 23:00:00 +0000

Type Values Removed Values Added
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.
Title Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow
Weaknesses CWE-674
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Mongodb Mongodb Mongodb Server
cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-06-10T18:16:38.879Z

Reserved: 2026-05-27T17:33:16.187Z

Link: CVE-2026-9740

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-06-09T23:17:03.437

Modified: 2026-06-15T16:55:47.097

Link: CVE-2026-9740

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T02:30:05Z

Weaknesses