PT-2026-35539 · Spring · Spring Boot

Published 2026-04-27 · Updated 2026-04-27 · CVE-2026-40971

NVD

CVSS v3.1

5.0

Medium

AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2026-40971

Affected Products

Spring Boot

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-40971 · Security Note
• https://twitter.com/CVEnew/status/2048910083418145274 · Twitter Post
• https://twitter.com/threatcluster/status/2048832252293861552 · Twitter Post
• https://spring.io/security/cve-2026-40971 · Note