---
cve: "CVE-2026-55202"
severity: "HIGH"
cvss: 8.8
epss: "38%"
vendor: "Tinyproxy"
kev: false
exploited: false
published: "2026-06-17 20:17:29"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T07:38:45+02:00"
---

# CVE-2026-55202

> 8.8 HIGH · 🧪 PoC

## Beschreibung

Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- baecbf4c3e006fa68ab92f65bbd4138c47ede111 (Commit)
- 09312a185ae25cc486b4ff5987638a7917a48bce (Commit)

## Referenzen

- <https://github.com/tinyproxy/tinyproxy/pull/606>
- <https://github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce>
- <https://www.vulncheck.com/advisories/evil-winrm-path-traversal-in-download-dir-function>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55202) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_