Vulnerability DatabaseCVE-2026-40971
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CVE-2026-40971
Published:April 27, 2026
Updated:May 15, 2026
When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14) per vendor advisory.
Affected Packages
https://github.com/spring-projects/spring-boot.git (GITHUB):
Affected version(s) >=v3.5.0 <v3.5.14
Fix Suggestion:
Update to version v3.5.14
https://github.com/spring-projects/spring-boot.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.0.6
Fix Suggestion:
Update to version v4.0.6
org.springframework.boot:spring-boot-autoconfigure (JAVA):
Affected version(s) >=4.0.0 <4.0.6
Fix Suggestion:
Update to version 4.0.6
org.springframework.boot:spring-boot-autoconfigure (JAVA):
Affected version(s) >=3.5.0 <3.5.14
Fix Suggestion:
Update to version 3.5.14
Related Resources (3)
https://github.com/spring-projects/spring-boot
https://nvd.nist.gov/vuln/detail/CVE-2026-40971
https://spring.io/security/cve-2026-40971
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CVSS v4
Base Score:
2.3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improper Certificate Validation
CWE-295
EPSS
Base Score:
0.05