Summary
Steeltoe's sensitive actuators (heapdump/env) only require Restricted permission
All Steeltoe actuator endpoints default to EndpointPermissions.Restricted, which is mapped to Cloud Foundry's read_basic_data permission (granted to Space Auditors and similar low-trust roles). Sensitive actuators including heap dump, environment, and thread dump do not raise this to EndpointPermissions.Full, so CF's read_sensitive_data permission flag is not enforced for those endpoints. Spring Boot's equivalent Cloud Foundry integration gates these endpoints with read_sensitive_data by default.
Affected configuration
- Application is deployed on Cloud Foundry with CF actuator and security middleware active (added automatically by
AddAllActuators()when a CF environment is detected). - The attacker holds a CF role that grants
read_basic_data: Space Auditor, Space Manager, or Org Auditor.
Mitigations
If an immediate upgrade is not possible:
- Explicitly set
RequiredPermissions = EndpointPermissions.Fullin the options forHeapDumpEndpointOptions,EnvironmentEndpointOptions, andThreadDumpEndpointOptions. - If heap dump, thread dump, or environment are not needed in production, register only the required actuators individually instead of using
AddAllActuators().
Impact
Any CF user holding Space Auditor, Space Manager, or Org Auditor role can access the heap dump, environment, and thread dump actuators for any Steeltoe application in their space. A heap dump contains all in-memory data including database passwords, bearer tokens, and VCAP_SERVICES credentials. CF's read_sensitive_data permission, which is specifically designed to gate this access, has no effect.
The application assigns, modifies, tracks, or checks privileges incorrectly, allowing a user to gain elevated access. Typical impact: privilege escalation beyond the intended level.
CVE-2026-50201 has a CVSS score of 6.5 (Medium). The vector is network-reachable, low 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.
Affected versions
Security releases
Kodem intelligence
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. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Steeltoe.Management.Endpoint to 4.2.0 or later; Steeltoe.Management.EndpointBase to 3.4.0 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2026-50201? CVE-2026-50201 is a medium-severity improper privilege management vulnerability in Steeltoe.Management.Endpoint (nuget), affecting versions <= 4.1.0. It is fixed in 4.2.0, 3.4.0. The application assigns, modifies, tracks, or checks privileges incorrectly, allowing a user to gain elevated access.
- How severe is CVE-2026-50201? CVE-2026-50201 has a CVSS score of 6.5 (Medium). 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.
- Which packages are affected by CVE-2026-50201?
Steeltoe.Management.Endpoint(nuget) (versions <= 4.1.0)Steeltoe.Management.EndpointBase(nuget) (versions <= 3.3.0)
- Is there a fix for CVE-2026-50201? Yes. CVE-2026-50201 is fixed in 4.2.0, 3.4.0. Upgrade to this version or later.
- Is CVE-2026-50201 exploitable, and should I be worried? Whether CVE-2026-50201 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
- What actually determines whether CVE-2026-50201 is exploitable, and how bad it is? 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.
- How do I fix CVE-2026-50201?
- Upgrade
Steeltoe.Management.Endpointto 4.2.0 or later - Upgrade
Steeltoe.Management.EndpointBaseto 3.4.0 or later
- Upgrade