CVE-2026-5170

MEDIUM

Users could trigger a crash of mongod primaries during promotion to sharded

Title source: cna
STIX 2.1

Description

A user with access to the cluster with a limited set of privilege actions can trigger a crash of a mongod process during the limited and unpredictable window when the cluster is being promoted from a replica set to a sharded cluster. This may cause a denial of service by taking down the primary of the replica set. This issue affects MongoDB Server v8.2 versions prior to 8.2.2, MongoDB Server v8.0 versions between 8.0.18, MongoDB Server v7.0 versions between 7.0.31.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
https://jira.mongodb.org/browse/SERVER-101758

Scores

CVSS v3 5.3
EPSS 0.0020
EPSS Percentile 10.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-617
Status published
Products (4)
mongodb/mongodb 7.0.0 - 7.0.31
MongoDB/MongoDB Server 7.0 - 7.0.31
MongoDB/MongoDB Server 8.0 - 8.0.18
MongoDB/MongoDB Server 8.2 - 8.2.2
Published Mar 30, 2026
Tracked Since Mar 30, 2026