What is CVE-2026-22747?

CVE-2026-22747 is a medium-severity vulnerability in Spring Security. CVSS score: 6.8/10. Published 2026-04-22.

How severe is CVE-2026-22747?

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

Vulnerability in Spring Security

CVE-2026-22747

Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor 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…

EPSS: 0.000 (9.3th percentile) — read the EPSS interpretation.

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.

Affected products

Spring Security — versions 7.0.0

References

spring.io/security/cve-2026-22747

Frequently asked questions

What is CVE-2026-22747?: CVE-2026-22747 is a medium-severity vulnerability in Spring Security. CVSS score: 6.8/10. Published 2026-04-22.
How severe is CVE-2026-22747?: Medium severity. CVSS v3 base score is 6.8 out of 10.