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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://spring.io/security/cve-2026-40976	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-40976
https://bugzilla.redhat.com/show_bug.cgi?id=2463322
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40976.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-28 00:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-40976

Mitre link : CVE-2026-40976

CVE.ORG link : CVE-2026-40976

JSON object : View

Products Affected

vmware

spring_boot

CWE

CWE-862

Missing Authorization

CWE-305

Authentication Bypass by Primary Weakness

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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.\n\nAffected: Spring Boot 4.0.0\u20134.0.5; upgrade to 4.0.6 or later per vendor advisory."}, {"lang": "es", "value": "En ciertas circunstancias, la seguridad web predeterminada de Spring Boot es ineficaz, permitiendo el acceso no autorizado a todos los puntos finales. Para que una aplicaci\u00f3n sea vulnerable, debe: ser una aplicaci\u00f3n web basada en servlets; no tener configuraci\u00f3n propia de Spring Security y depender de la cadena de filtros de seguridad web predeterminada; depender de spring-boot-actuator-autoconfigure; no depender de spring-boot-health. Si alguna de las condiciones anteriores no se cumple, la aplicaci\u00f3n no es vulnerable.\n\nAfectado: Spring Boot 4.0.0-4.0.5; actualizar a 4.0.6 o posterior seg\u00fan el aviso del proveedor."}], "lastModified": "2026-07-24T21:10:00.143", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12A166C5-8B55-4BA3-AA8B-6024A257D441", "versionEndExcluding": "4.0.6", "versionStartIncluding": "4.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@vmware.com"}