---
cve: "CVE-2026-4342"
severity: "HIGH"
cvss: 8.8
epss: "23.9%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-03-19 22:16:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:55:26+02:00"
---

# CVE-2026-4342

> 8.8 HIGH

## Beschreibung

A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 279297c6f5b86f8867a01951616ccb9513b38bc2 (Commit)
- 0a6fadc01bd4706bc77ceaf91487345a8d03d9c0 (Commit)

## Referenzen

- <https://github.com/kubernetes/kubernetes/issues/137893>
- <http://www.openwall.com/lists/oss-security/2026/03/19/9>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-4342) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_