---
cve: "CVE-2026-63329"
severity: "MEDIUM"
cvss: 4.9
epss: "6.5%"
vendor: "warp-tech"
kev: false
exploited: false
published: "2026-09-21 19:17:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T08:12:34+02:00"
---

# CVE-2026-63329

> 4.9 MEDIUM · 🧪 PoC

## Beschreibung

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.25.6, copy_server_request in warpgate-protocol-http/src/proxy.rs forwards a client-supplied x-warpgate-username header before inject_own_headers appends the authenticated username. Because the request builder preserves repeated values, a proxied backend that trusts the first x-warpgate-username value can authorize an authenticated attacker as another user. The same forwarding policy also accepts the reserved x-warpgate-authentication-type header, and warpgate-common/src/http_headers.rs does not exclude either reserved identity header. This issue is fixed in version 0.25.6.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 3bab7513cbaf10b223ad92665df953196310ac97 (Commit)

## Referenzen

- <https://github.com/warp-tech/warpgate/security/advisories/GHSA-862h-v6cc-9757>
- <https://github.com/warp-tech/warpgate/commit/c3748d7585209781b2d3a39ac9941b91d11d9b77>
- <https://github.com/warp-tech/warpgate/releases/tag/v0.25.6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-63329) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_