Server-side Request Forgery (SSRF) Affecting github.com/lin-snow/ech0/internal/webhook/infra/httpclient package, versions <4.4.3
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMLINSNOWECH0INTERNALWEBHOOKINFRAHTTPCLIENT-16321068
- published29 Apr 2026
- disclosed10 Apr 2026
- creditoffset
Introduced: 10 Apr 2026
CVE NOT AVAILABLE CWE-918 Â (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade github.com/lin-snow/Ech0/internal/webhook/infra/httpclient to version 4.4.3 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the validateWebhookURL function. An administrator can access internal network resources and cloud metadata endpoints by submitting webhook URLs that use hostnames resolving to private IP addresses, bypassing intended IP address restrictions. This can lead to exposure of sensitive information and internal network mapping.