{"id":"CVE-2026-40971","aliases":["GHSA-9vc8-qppq-wvxc"],"url":"https://o3.security/vulnerability/CVE-2026-40971","summary":"Spring Boot's RabbitMQ auto-configuration doesn't perform hostname verification when connecting to the RabbitMQ broker","details":"When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker.\n\nAffected: 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.","published":"2026-04-27T22:45:13.327Z","modified":"2026-07-27T03:56:14.791728067Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-rabbitmq","fixedVersion":"4.0.6"},{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-rabbitmq","fixedVersion":"3.5.14"}],"fix":null,"references":[{"type":"WEB","url":"https://spring.io/security/cve-2026-40971"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40971.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40971"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-27T03:56:14.791728067Z"}}