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 impersonating another user. Affected versions: Spring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.

Score

CVSS 3.1 8.1 High

Status

Analyzed - security@vmware.com

Published

2026-06-10

Last modified

2026-06-30

Weaknesses

CWE-287

Affected products

• Spring Security (Spring)
• Spring Security (Vmware)

References

• https://spring.io/security/cve-2026-47838