CVE-2026-40971 PUBLISHED

Assigner: vmware
Reserved: 16.04.2026 Published: 27.04.2026 Updated: 27.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS Score: 5

Attack Vector	Adjacent Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Spring
Product	Spring Boot
Versions	Default: unaffected affected from 4.0.0 to 4.0.6 (excl.) affected from 3.5.0 to 3.5.14 (excl.)

References

https://spring.io/security/cve-2026-40971

Problem Types

CWE-295: Improper Certificate Validation CWE

Impacts

Per CVSS v3.1: Confidentiality LOW; Integrity LOW; Availability LOW.