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

5.4MEDIUM

Key Information:

Vendor

Spring

Status
Spring Web Services
Vendor
CVE Published:
11 June 2026

What is CVE-2026-40995?

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 Version(s)

Spring Web Services 5.0.0 < 5.0.2

Spring Web Services 4.1.0 < 4.1.4

Spring Web Services 4.0.0 < 4.0.19

References

https://spring.io/security/cve-2026-40995

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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