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

30 Jun 2026, 03:19

Type	Values Removed	Values Added
CWE		CWE-305
References		() 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 -

30 Apr 2026, 13:54

Type	Values Removed	Values Added
CPE		cpe:2.3:a:vmware:spring_boot::::::::
First Time		Vmware Vmware spring Boot
References	~~() https://spring.io/security/cve-2026-40976 -~~	() https://spring.io/security/cve-2026-40976 - Vendor Advisory

28 Apr 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-28 00:16

Updated : 2026-07-15 02:21

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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