Vulnerability Details CVE-2026-40976
In certain circumstances, Spring Boot's default web security is ineffective allowing unauthorized access to all endpoints. For an application to be vulnerable, it must: be a servlet-based web application; have no Spring Security configuration of its own and rely on the default web security filter chain; depend on spring-boot-actuator-autoconfigure; not depend on spring-boot-health. If any of the above does not apply, the application is not vulnerable.
Affected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 10.5%
CVSS Severity
CVSS v3 Score 9.1
References
Products affected by CVE-2026-40976
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cpe:2.3:a:vmware:spring_boot:*