What is CVE-2026-47838?

CVE-2026-47838 is a medium-severity vulnerability, classified under Improper Authentication. CVSS score: 6.8/10. Published 2026-06-10.

How severe is CVE-2026-47838?

Medium severity. CVSS v3 base score is 6.8 out of 10.

CVE-2026-47838

CVE-2026-47838

SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersona…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47838?: CVE-2026-47838 is a medium-severity vulnerability, classified under Improper Authentication. CVSS score: 6.8/10. Published 2026-06-10.
How severe is CVE-2026-47838?: Medium severity. CVSS v3 base score is 6.8 out of 10.