Authentication Bypass Using an Alternate Path or Channel Affecting steeltoe.management.endpointcore package, versions [3.2.2,3.4.0)
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.
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 applications- Snyk IDSNYK-DOTNET-STEELTOEMANAGEMENTENDPOINTCORE-17374817
- 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.EndpointCore to version 3.4.0 or higher.
Overview
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.