CVE-2026-40971: VMware Spring Boot

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• VMware Spring Boot: from 3.5.0, before 3.5.14 (fixed in 3.5.14); from 4.0.0, before 4.0.6 (fixed in 4.0.6)

Published 2026-04-27. Last modified 2026-07-24.