CVE-2026-50194 is a high-severity security vulnerability in Steeltoe.Management.Endpoint (nuget), affecting versions <= 4.1.0. It is fixed in 4.2.0, 3.4.0.
Summary When Steeltoe management endpoints are configured to listen on an alternate port (Management:Endpoints:Port is configured), the middleware responsible for restricting access to the endpoints uses the Host HTTP header rather than the actual network socket port. Impact An unauthenticated remote attacker can reach every actuator endpoint using a specially crafted HTTP request. Affected configuration The application's public port is accessible over from the network. Management:Endpoints:Port is configured to a value different from the application's main listener port. The request scheme matches Management:Endpoints:SslEnabled. For example, http when SslEnabled is false (the default), or https when SslEnabled is true. Mitigations If an immediate upgrade to a patched version is not possible: Add explicit ASP.NET Core authorization (RequireAuthorization) to all sensitive actuator endpoints as a defense-in-depth measure independent of port isolation. Configure the reverse proxy or load balancer to enforce the Host header value and prevent clients from setting an arbitrary port.
CVE-2026-50194 has a CVSS score of 8.2 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (4.2.0, 3.4.0). Upgrading removes the vulnerable code path.
nuget
Steeltoe.Management.Endpoint (<= 4.1.0)Steeltoe.Management.EndpointCore (>= 3.2.2, <= 3.3.0)Steeltoe.Management.Endpoint → 4.2.0 (nuget)Steeltoe.Management.EndpointCore → 3.4.0 (nuget)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
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Already deployed Kodem? See CVE-2026-50194 in your environment →Upgrade the following packages to resolve this vulnerability:
Steeltoe.Management.Endpoint to 4.2.0 or laterSteeltoe.Management.EndpointCore to 3.4.0 or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2026-50194 is a high-severity security vulnerability in Steeltoe.Management.Endpoint (nuget), affecting versions <= 4.1.0. It is fixed in 4.2.0, 3.4.0.
CVE-2026-50194 has a CVSS score of 8.2 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Steeltoe.Management.Endpoint (nuget) (versions <= 4.1.0)Steeltoe.Management.EndpointCore (nuget) (versions >= 3.2.2, <= 3.3.0)Yes. CVE-2026-50194 is fixed in 4.2.0, 3.4.0. Upgrade to this version or later.
Whether CVE-2026-50194 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Steeltoe.Management.Endpoint to 4.2.0 or laterSteeltoe.Management.EndpointCore to 3.4.0 or later