Denial of Service Vulnerability in MongoDB Server by MongoDB
CVE-2026-5170

6MEDIUM

Key Information:

Vendor

Mongodb
Status
Mongodb Server
Vendor
CVE Published:
30 March 2026

What is CVE-2026-5170?

A user with limited privileges on a MongoDB cluster can exploit a specific window during the promotion of a replica set to a sharded cluster, potentially crashing the mongod process. This disruption can lead to a denial of service by incapacitating the primary replica set, impacting accessibility and reliability for users and applications relying on the database.

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Affected Version(s)

MongoDB Server 8.2 < 8.2.2

MongoDB Server 8.0 < 8.0.18

MongoDB Server 7.0 < 7.0.31

References

https://jira.mongodb.org/browse/SERVER-101758
vendor-advisory

CVSS V4

Score:
6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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