SEPTEMBER 19, 2026
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Case File

CVE-2026-40976

CRITICAL · CVSS 9.1 EPSS 0.49%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-04-28 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. See the original NVD description below for full technical details.

CVE
CVE-2026-40976
Severity
CRITICAL
CVSS
9.1
EPSS
0.49%

Original NVD 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.

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