CVE-2026-5170

MEDIUM

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

Title source: cna

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)

[Vendor Advisory] https://jira.mongodb.org/browse/SERVER-101758

Scores

CVSS v3 5.3

EPSS 0.0005

EPSS Percentile 14.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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