Vulnerabilities
Vulnerable Software

Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.9%
CVSS Severity
CVSS v3 Score 6.8
Products affected by CVE-2026-47838


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