---
cve: "CVE-2026-22747"
severity: "MEDIUM"
cvss: 6.8
epss: "30%"
vendor: "Spring"
kev: false
exploited: false
published: "2026-04-22 06:16:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T15:10:40+02:00"
---

# CVE-2026-22747

> 6.8 MEDIUM

## Beschreibung

Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.
This issue affects Spring Security: from 7.0.0 through 7.0.4.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 53bc6a77963209bb2a5f3efdd855b1f4a8051cc3 (Commit)

## Referenzen

- <https://spring.io/security/cve-2026-22747>
- <https://access.redhat.com/security/cve/CVE-2026-22747>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2460487>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22747.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-22747) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_