CVE-2026-25611

Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server

State: Published
Severity: 8.7 High
Published: Feb 10, 2026
Updated: Feb 11, 2026
Reserved: Feb 3, 2026

Description

A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	mongodb
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	mongodb

Weaknesses

CWE-405 Asymmetric Resource Consumption (Amplification)

Affected Products

Product	Versions
MongoDB ServerMongoDB Inc	8.2 to before 8.2.4Affected 8.0 to before 8.0.18Affected 7.0 to before 7.0.29Affected

References

https://jira.mongodb.org/browse/SERVER-116210
https://jira.mongodb.org/browse/SERVER-116206
https://jira.mongodb.org/browse/SERVER-116211

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