---
cve: "CVE-2021-25746"
severity: "HIGH"
cvss: 7.6
epss: "1.4%"
vendor: "Kubernetes"
kev: false
exploited: false
published: "2022-05-06 01:15:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T14:00:23+02:00"
---

# CVE-2021-25746

> 7.6 HIGH · 🧪 PoC

## Beschreibung

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

## CVSS-Vektor

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

| 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 | Gering | warn |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- 6d9a39eda7b180f27b34726d7a7a96d73808ce75 (Commit)

## Referenzen

- <https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ>
- <https://github.com/kubernetes/ingress-nginx/issues/8503>
- <https://security.netapp.com/advisory/ntap-20220609-0006/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-25746) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_