---
cve: "CVE-2026-73842"
severity: "CRITICAL"
cvss: 9.0
epss: "0.3%"
vendor: "openchoreo"
kev: false
exploited: false
published: "2026-08-13 22:17:29"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-07T04:06:18+01:00"
---

# CVE-2026-73842

> 9.0 CRITICAL · 🧪 PoC

## Beschreibung

OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, internal/cluster-gateway/server.go exposed /api/proxy/, /api/exec/, and /api/wirelogs/ on an internal listener without requiring a client certificate or token, allowing any network-reachable caller to read tenant Kubernetes Secrets, mutate workloads, and execute commands across connected data planes. This issue is fixed in versions 1.0.3, 1.1.3, and 1.2.0-rc.2.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-08-18 01:44:27
- CNA-CVSS: **9.0** (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-269** — Improper Privilege Management
  The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
- **CWE-306** — Missing Authentication for Critical Functionality
  The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
- **CWE-862** — Missing Authorization
  The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

## Angriffsmuster (CAPEC)

- [CAPEC-58 — Restful Privilege Elevation](https://capec.mitre.org/data/definitions/58.html) _(Severity: High)_
- [CAPEC-122 — Privilege Abuse](https://capec.mitre.org/data/definitions/122.html) _(Severity: Medium)_
- [CAPEC-233 — Privilege Escalation](https://capec.mitre.org/data/definitions/233.html)

## ATT&CK-Techniken

- [T1548 — Abuse Elevation Control Mechanism](https://attack.mitre.org/techniques/T1548/)

## Patch verfügbar (OSV)

- ab4d9b2ac7c9b4bae184b76f2107a97a07597008 (Commit)
- 6939146711434ad0f427ade431c726b960ddcec8 (Commit)

## Referenzen

- <https://github.com/openchoreo/openchoreo/security/advisories/GHSA-rh53-xvx2-j327>
- <https://github.com/openchoreo/openchoreo/pull/4256>
- <https://github.com/openchoreo/openchoreo/pull/4258>
- <https://github.com/openchoreo/openchoreo/pull/4259>
- <https://github.com/openchoreo/openchoreo/commit/50fcae3f1753fd0ac3ae655a3fc080a761c49c04>
- <https://github.com/openchoreo/openchoreo/commit/93e6f10953cfc249af2222ddb6730d4b0a729129>
- <https://github.com/openchoreo/openchoreo/commit/e3da3c63dcf0895c693cb17ce142ef95e959b62a>
- <https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3>
- <https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3>
- <https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-73842/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_