CVE-2026-40971

At a glance

Severity: MEDIUM 5.0
EPSS: EPSS 0.16 % · percentile 5 (2026-10-27)
State: PUBLISHED
Published: 2026-04-27
Updated: 2026-04-28
Assigner: vmware
NVD status: Analyzed

Description

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.0	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L	vmware
CVSS 3.1	MEDIUM 5.0	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L	NVD · security@vmware.com (Secondary)
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-295

Advisories

GHSA-9vc8-qppq-wvxc — Spring Boot's RabbitMQ auto-configuration doesn't perform hostname verification when connecting to the RabbitMQ broker

European references

ENISA EUVD · EUVD-2026-25930
GCVE · GCVE-0-2026-40971

CERT-FR advisories

CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0748 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0488 — Multiples vulnérabilités dans Spring Boot · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:* ≥ 3.5.0 < 3.5.14
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:* ≥ 4.0.0 < 4.0.6

Affected products

Product	Versions
Spring · Spring Boot	affected 4.0.0 < 4.0.6 ; affected 3.5.0 < 3.5.14

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD