Server-side Request Forgery (SSRF) Affecting github.com/lin-snow/ech0/internal/router package, versions <4.2.8
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMLINSNOWECH0INTERNALROUTER-16072996
- published15 Apr 2026
- disclosed3 Apr 2026
- creditVashuVats
Introduced: 3 Apr 2026
CVE-2026-35036 Â (opens in a new tab)How to fix?
Upgrade github.com/lin-snow/ech0/internal/router to version 4.2.8 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the GET /api/website/title endpoint. An attacker can access internal or restricted network resources and potentially exfiltrate sensitive information by supplying a crafted URL to the unauthenticated endpoint, causing the server to perform HTTP(S) requests from its own network context. This is possible due to the lack of URL validation, absence of authentication, enabled HTTP redirects, and insecure TLS verification.