What is CVE-2026-120815?

CVE-2026-120815 is a high-severity vulnerability in MongoDB Server, classified under Incorrect Authorization. CVSS score: 8.4/10. Published 2026-11-10.

How severe is CVE-2026-120815?

High severity. CVSS v3 base score is 8.4 out of 10.

Auth bypass in MongoDB Server

CVE-2026-120815

An incorrect authorization check in the MongoDB Server authorization subsystem may allow an unauthenticated party with local host access to obtain administrative privileges on a database server that has authorization enabled. This may result in unintended access to stored data and credentials, unintended modification of data, and loss of availability of the server.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-863 — Incorrect Authorization

References

jira.mongodb.org/browse/SERVER-134872

Frequently asked questions

What is CVE-2026-120815?: CVE-2026-120815 is a high-severity vulnerability in MongoDB Server, classified under Incorrect Authorization. CVSS score: 8.4/10. Published 2026-11-10.
How severe is CVE-2026-120815?: High severity. CVSS v3 base score is 8.4 out of 10.