What is CVE-2026-120804?

CVE-2026-120804 is a high-severity vulnerability in MongoDB Server, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2026-11-10.

How severe is CVE-2026-120804?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in MongoDB Server

CVE-2026-120804

A flaw exists in the server-side SSPI Kerberos authentication handler on Windows Enterprise builds of MongoDB. When processing certain authentication requests, the server fails to properly release an underlying system resource due to an internal tracking error. An unauthenticated user can trigger this by repeatedly sending authentication requests using the Kerberos mechanism, eventually exhausting available resources and causing all subsequent Kerberos authentication attempts to fail. Server restart is required to recover.

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

MongoDB Server

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

jira.mongodb.org/browse/SERVER-130268

Frequently asked questions

What is CVE-2026-120804?: CVE-2026-120804 is a high-severity vulnerability in MongoDB Server, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2026-11-10.
How severe is CVE-2026-120804?: High severity. CVSS v3 base score is 7.5 out of 10.