Authentication Bypass Using an Alternate Path or Channel Affecting steeltoe.management.endpoint package, versions [,4.2.0)
Threat Intelligence
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.
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Test your applications- Snyk IDSNYK-DOTNET-STEELTOEMANAGEMENTENDPOINT-17374816
- published18 Jun 2026
- disclosed18 Jun 2026
- creditUnknown
Introduced: 18 Jun 2026
NewCVE-2026-50194 (opens in a new tab)How to fix?
Upgrade Steeltoe.Management.Endpoint to version 4.2.0 or higher.
Overview
Steeltoe.Management.Endpoint is a package that provides building blocks for development of .NET applications that integrate with Spring and Spring Boot environments, as well as Cloud Foundry and Kubernetes with first-party support for Tanzu.
Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the middleware responsible for access restriction, which relies on the Host HTTP header rather than the actual network socket port. An attacker can gain unauthorized access to management endpoints by sending requests with a spoofed Host header.
Workaround
This vulnerability can be mitigated by adding explicit ASP.NET Core authorization (RequireAuthorization) to all sensitive actuator endpoints and/or configuring the reverse proxy or load balancer to enforce the Host header value and prevent clients from setting an arbitrary port.