---
cve: "CVE-2026-40971"
severity: "MEDIUM"
cvss: 5.0
epss: "16%"
vendor: "Spring"
kev: false
exploited: false
published: "2026-04-27 23:16:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T19:20:13+02:00"
---

# CVE-2026-40971

> 5.0 MEDIUM

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- 7d7b3ac12735161f9c096ce6cb415bdd9fc4a0f4 (Commit)
- 8821ad2cd381bb4b9615a61479e1de7305a8ba39 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40971) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_