---
cve: "CVE-2026-34040"
severity: "HIGH"
cvss: 8.8
epss: "9.3%"
vendor: "moby"
kev: false
exploited: false
published: "2026-03-31 03:15:57"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-10T01:32:13+01:00"
---

# CVE-2026-34040

> 8.8 HIGH · 🧪 PoC

## Beschreibung

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-04-02 03:55:56
- CNA-CVSS: **8.8** (`CVSS:3.1/AV:L/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:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| 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-288** — Authentication Bypass Using an Alternate Path or Channel
  The product requires authentication, but the product has an alternate path or channel that does not require authentication.

## Angriffsmuster (CAPEC)

- [CAPEC-127 — Directory Indexing](https://capec.mitre.org/data/definitions/127.html) _(Severity: Medium)_
- [CAPEC-665 — Exploitation of Thunderbolt Protection Flaws](https://capec.mitre.org/data/definitions/665.html) _(Severity: Very High)_

## ATT&CK-Techniken

- [T1083 — File and Directory Discovery](https://attack.mitre.org/techniques/T1083/)
- [T1211 — Exploitation for Defensive Evasion](https://attack.mitre.org/techniques/T1211/)
- [T1542.002 — Pre-OS Boot: Component Firmware](https://attack.mitre.org/techniques/T1542/002/)
- [T1556 — Modify Authentication Process](https://attack.mitre.org/techniques/T1556/)

## Patch verfügbar (OSV)

- f78c987ad3710cacffe47fce696975ecb337148d (Commit)

## BSI-Hinweise (deutsch)

- [docker: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-0873) — _BSI-Einstufung: hoch_
  Ein lokaler Angreifer kann mehrere Schwachstellen in docker ausnutzen, um Sicherheitsvorkehrungen zu umgehen und Informationen offenzulegen.

## Referenzen

- <https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2>
- <https://github.com/moby/moby/releases/tag/docker-v29.3.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-34040/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_