CVEvulnerability

CVE-2026-35037

7.2 HIGH Published 2026-04-06 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-04-06
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weaknesses
CWE-918

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.

Affected configurations

• ech0 ech0 (< 4.2.8)

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References