CVE-2026-5170
Users could trigger a crash of mongod primaries during promotion to sharded
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-617 |
| Vendor | mongodb |
| Product | mongodb server |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 30, 2026 |
| Last Updated | Mar 30, 2026 |
Stay Ahead of the Next One
Get instant alerts for mongodb mongodb server
Be the first to know when new medium vulnerabilities affecting mongodb mongodb server are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB / MongoDB Server
8.2 < 8.2.2 8.0 < 8.0.18 7.0 < 7.0.31