Spring Web Services 4.05.0 X509AuthProvider bypasses account state checks
CVE-2026-40995 Published on June 11, 2026
X.509 authentication bypasses Spring Security account checks
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.
Vulnerability Analysis
CVE-2026-40995 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2026-40995 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2026-40995
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Affected Versions
Spring Web Services:- Version 5.0.0 and below 5.0.2 is affected.
- Version 4.1.0 and below 4.1.4 is affected.
- Version 4.0.0 and below 4.0.19 is affected.
- Version 3.1.0 and below 3.1.9 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.