What’s Vulnerable › Vulnerabilities
CVE-2026-40995: X.509 authentication bypasses Spring Security account checks
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-11 · updated 2026-09-04
- Weakness: CWE-287
Description
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.
Affected products
- Spring Web Services: before 3.1.9; from 4.0.0 before 4.0.19; from 4.1.0 before 4.1.3.1; from 5.0.0 before 5.0.1.1 — fixed in 3.1.9, 4.0.19, 4.1.3.1, 5.0.1.1
How to fix
Upgrade to a fixed version: Spring Web Services 3.1.9, 4.0.19, 4.1.3.1, 5.0.1.1. Check the vendor advisory for mitigations.
References
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