Auth bypass in MongoDB
CVE-2026-13067
When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local access to the proxy Unix domain socket and a valid X.509 certificate issued by a trusted certificate authority.
Vulnerability class: Broken Access Control
EPSS: 0.001 (0.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Mongodb
- Mongodb Server — versions 8.0, 8.3.0
Weakness classification (CWE)
References
- cna@mongodb.com (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-13067?
- CVE-2026-13067 is a medium-severity vulnerability in MongoDB, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-07-22.
- How severe is CVE-2026-13067?
- Medium severity. CVSS v3 base score is 6.3 out of 10.