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CVE-2026-40976

Published: Apr 27, 2026Updated: Apr 30, 2026 Sources: CVE List NVDCWE-862
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.4%
Top 67.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-862

Affected Products

spring bootvmware
On-prem
Cloud & SaaS / virtualization
Spring BootSpringOSS Libraries
vmwarecommercialUSCloud & SaaSaka vmware inc
springoss-projectOSS Librariesaka spring framework, spring boot, spring security

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://spring.io/security/cve-2026-40976
spring.io

Timeline

Published
Apr 27, 2026
Last Updated
Apr 30, 2026

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