---
cve: "CVE-2026-33467"
severity: "MEDIUM"
cvss: 5.9
epss: "12%"
vendor: "Elastic"
kev: false
exploited: false
published: "2026-04-28 22:16:48"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T16:05:03+02:00"
---

# CVE-2026-33467

> 5.9 MEDIUM

## Beschreibung

Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-347** — Improper Verification of Cryptographic Signature
  The product does not verify, or incorrectly verifies, the cryptographic signature for data.

## Angriffsmuster (CAPEC)

- [CAPEC-463 — Padding Oracle Crypto Attack](https://capec.mitre.org/data/definitions/463.html) _(Severity: High)_
- [CAPEC-475 — Signature Spoofing by Improper Validation](https://capec.mitre.org/data/definitions/475.html) _(Severity: High)_

## Patch verfügbar (OSV)

- 662a9d5a9ea1102e30de6a549b2bee14b5a1a189 (Commit)

## Referenzen

- <https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33467) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_