CVE-2026-40971: Spring Boot's RabbitMQ auto-configuration doesn't perform hostname verification when connecting to the RabbitMQ broker

April 28, 2026 (updated May 6, 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.

References

github.com/advisories/GHSA-9vc8-qppq-wvxc
github.com/spring-projects/spring-boot
nvd.nist.gov/vuln/detail/CVE-2026-40971
spring.io/security/cve-2026-40971

Code Behaviors & Features

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