What is CVE-2026-5170?

CVE-2026-5170 is a medium-severity vulnerability in Mongodb Server, classified under Reachable Assertion. CVSS score: 5.3/10. Published 2026-03-30.

How severe is CVE-2026-5170?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Mongodb Server

CVE-2026-5170

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…

EPSS: 0.000 (15.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mongodb Server — versions 8.2, 8.0, 7.0

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

jira.mongodb.org/browse/SERVER-101758 (vendor-advisory)

Frequently asked questions

What is CVE-2026-5170?: CVE-2026-5170 is a medium-severity vulnerability in Mongodb Server, classified under Reachable Assertion. CVSS score: 5.3/10. Published 2026-03-30.
How severe is CVE-2026-5170?: Medium severity. CVSS v3 base score is 5.3 out of 10.