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.

• CWE-862
• CWE-305

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

Published

Apr 28, 2026

Last Modified

Jul 24, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-40970When configured to use an SSL bundle, Spring Boot's Elastics…6.8
• CVE-2026-40971When configured to use an SSL bundle, Spring Boot's RabbitMQ…9.1
• CVE-2026-40972An attacker on the same network as the remote application ma…7.5
• CVE-2026-40973A local attacker on the same host as the application may be …7
• CVE-2026-40974Spring Boot's Cassandra auto-configuration does not perform …9.8
• CVE-2026-40975Values produced by ${random.value} are not suitable for use …7.5
• CVE-2026-40977When an application is configured to use `ApplicationPidFile…6.7
• CVE-2026-40978SQL injection vulnerability in Spring AI's `CosmosDBVectorSt…8.8
• CVE-2026-40979In Spring AI, having access to a shared environment can expo…6.1
• CVE-2026-40980In Spring AI, a malicious PDF file can be crafted that trigg…6.5
• CVE-2026-40981When using Google Secrets Manager as a backend for the Sprin…7.5
• CVE-2026-40982Spring Cloud Config allows applications to serve arbitrary t…9.1