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.

INFO

Published Date :

2026-04-06T16:56:54.674Z

Last Modified :

2026-04-06T18:48:39.909Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35037 vulnerability.

Vendors Products
Lin-snow
  • Ech0
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35037.

URL Resource
https://github.com/lin-snow/Ech0/security/advisories/GHSA-cqgf-f4x7-g6wc cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
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