Vmware Spring Boot up to 3.5.13/4.0.5 RabbitMQ Auto-configuration certificate validation

Summaryinfo

A vulnerability has been found in Vmware Spring Boot up to 3.5.13/4.0.5 and classified as critical. This vulnerability affects unknown code of the component RabbitMQ Auto-configuration. Performing a manipulation results in certificate validation. This vulnerability is identified as CVE-2026-40971. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Vmware Spring Boot up to 3.5.13/4.0.5. This affects an unknown part of the component RabbitMQ Auto-configuration. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity. The summary by CVE is:

When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14) per vendor advisory.

The advisory is shared at spring.io. This vulnerability is uniquely identified as CVE-2026-40971 since 04/16/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for 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 06/03/2026). MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

Upgrading to version 3.5.14 or 4.0.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1263). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Red Hat Enterprise Linux
• VMware Tanzu Spring Boot
• HCL Commerce
• Red Hat OpenShift

Productinfo

Vendor

• Vmware

Name

• Spring Boot

Version

• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.5.4
• 3.5.5
• 3.5.6
• 3.5.7
• 3.5.8
• 3.5.9
• 3.5.10
• 3.5.11
• 3.5.12
• 3.5.13
• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5

License

• commercial

Website

• Vendor: https://www.vmware.com/

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Entryinfo

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

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