Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Affecting github.com/dadrus/heimdall/internal/x package, versions <0.17.17
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMDADRUSHEIMDALLINTERNALX-17738978
- published30 Jun 2026
- disclosed18 Jun 2026
- creditUnknown
Introduced: 18 Jun 2026
CVE NOT AVAILABLE CWE-74 Â (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade github.com/dadrus/heimdall/internal/x to version 0.17.17 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') via the Host header when operating in proxy mode, due to unsanitized input being directly inserted into the Forwarded header. An attacker can bypass access controls or spoof IP addresses by injecting specially crafted values into the Host header, which are then propagated to upstream services that parse the Forwarded header.