CVE-2026-40995: Spring Web Services: X.509 authentication bypasses Spring Security account checks

June 11, 2026 (updated August 21, 2026)

X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security’s standard account lifecycle checks (disabled, locked, expired, or credentials-expired accounts).

Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.

References

github.com/advisories/GHSA-6mfm-98wv-32wm
github.com/spring-projects/spring-ws/commit/e5dc311359e14f5b25bcb33f20d43cc3513e9d10
nvd.nist.gov/vuln/detail/CVE-2026-40995
spring.io/security/cve-2026-40995

Code Behaviors & Features

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