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CVE-2026-40976

Published: Apr 27, 2026Updated: Jul 24, 2026 Sources: CVE List NVDCWE-862
9.1CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 60.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

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-862CWE-305

Affected Products

Spring
oss-projectaka spring security, spring framework, spring boot
Spring Boot
OSS Libraries
vmware
commercial·USaka vmware inc
spring bootLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://spring.io/security/cve-2026-40976
spring.io
https://access.redhat.com/security/cve/CVE-2026-40976
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2463322
bugzilla.redhat.com
and 1 more references View all →

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