CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2026-40976
Critical (9.1) in vmware spring boot. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.springframework.boot:spring-boot 4.0.6.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-862, CWE-305
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vmware:spring_boot
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8v8j-3hxp-93wr | Maven | org.springframework.boot:spring-boot | >=4.0.0 <4.0.6 | 4.0.6 |