Ech0 affected by unauthenticated SSRF in GetWebsiteTitle allows access to internal services and cloud metadata
Title source: cnaExploitation Summary
EIP tracks 1 public exploit for CVE-2026-35037. PoCs published by fineman999.
AI-analyzed exploit summary This repository contains a functional proof-of-concept for CVE-2026-35037, an unauthenticated SSRF vulnerability in Ech0's GET /api/website/title endpoint. It includes a Docker-based lab environment, a verification script, and a Nuclei template to demonstrate the vulnerability.
Description
Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to 4.2.8, the GET /api/website/title endpoint accepts an arbitrary URL via the website_url query parameter and makes a server-side HTTP request to it without any validation of the target host or IP address. The endpoint requires no authentication. An attacker can use this to reach internal network services, cloud metadata endpoints (169.254.169.254), and localhost-bound services, with partial response data exfiltrated via the HTML <title> tag extraction This vulnerability is fixed in 4.2.8.
Exploits (1)
This repository contains a functional proof-of-concept for CVE-2026-35037, an unauthenticated SSRF vulnerability in Ech0's GET /api/website/title endpoint. It includes a Docker-based lab environment, a verification script, and a Nuclei template to demonstrate the vulnerability.
References (1)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N