Vmware Spring Web Services up to 3.1.8/4.0.18/4.1.3/5.0.1 improper authentication

Summaryinfo

A vulnerability was found in Vmware Spring Web Services up to 3.1.8/4.0.18/4.1.3/5.0.1. It has been rated as critical. Affected by this issue is some unknown functionality. The manipulation leads to improper authentication. This vulnerability is traded as CVE-2026-40995. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Vmware Spring Web Services up to 3.1.8/4.0.18/4.1.3/5.0.1. It has been rated as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at spring.io. The identification of this vulnerability is CVE-2026-40995 since 04/16/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/11/2026).

Upgrading to version 3.1.9, 4.0.19, 4.1.4 or 5.0.2 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Vmware

Name

• Spring Web Services

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 5.0.0
• 5.0.1

License

• commercial

Website

• Vendor: https://www.vmware.com/

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Entryinfo

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