CVE-2026-18687

MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a specially formed request that leads to a server crash or excessive internal writes, resulting in resource exhaustion and corruption of encrypted index data.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/SERVER-130628	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:mongodb::::::::
	cpe:2.3:a:mongodb:mongodb::::::::
	cpe:2.3:a:mongodb:mongodb::::::::
	cpe:2.3:a:mongodb:mongodb:9.0.0:alpha0:::-:-::
	cpe:2.3:a:mongodb:mongodb:9.0.0:alpha1:::-:-::
	cpe:2.3:a:mongodb:mongodb:9.1.0:alpha0:::-:-::

History

16 Sep 2026, 15:14

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mongodb:mongodb:9.0.0:alpha1:::-:-:: cpe:2.3:a:mongodb:mongodb:9.1.0:alpha0:::-:-:: cpe:2.3:a:mongodb:mongodb:9.0.0:alpha0:::-:-:: cpe:2.3:a:mongodb:mongodb::::::::
References	~~() https://jira.mongodb.org/browse/SERVER-130628 -~~	() https://jira.mongodb.org/browse/SERVER-130628 - Vendor Advisory
First Time		Mongodb Mongodb mongodb

Information

Published : 2026-08-11 19:17

Updated : 2026-09-16 15:14

NVD link : CVE-2026-18687

Mitre link : CVE-2026-18687

CVE.ORG link : CVE-2026-18687

JSON object : View

Products Affected

mongodb

mongodb

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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