CVE-2026-50201
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications.
Impact
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Management.Endpoint prior to version 4.2.0 and Steeltoe.Management.EndpointCore prior to version 3.4.0, all Steeltoe actuator endpoints default to `EndpointPermissions.Restricted`, which is mappeds 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. Steeltoe.Management.Endpoint 4.2.0 and Steeltoe.Management.EndpointCore 3.4.0 patch the issue. If an immediate upgrade is not possible, explicitly set `RequiredPermissions = EndpointPermissions.Full` in the options for `HeapDumpEndpointOptions`, `EnvironmentEndpointOptions`, and `ThreadDumpEndpointOptions`; and/or if heap dump, thread dump, or environment are not needed in production, register only the required actuators individually instead of using `AddAllActuators()`.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Steeltoe.Management.Endpoint | <= 4.1.0 | 4.2.0 |
| nuget | Steeltoe.Management.EndpointBase | <= 3.3.0 | 3.4.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-227r-jm2g-7cp4
- https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-227r-jm2g-7cp4
- https://nvd.nist.gov/vuln/detail/CVE-2026-50201
- https://github.com/SteeltoeOSS/Steeltoe/commit/b39defa4db5f44f8696c456866b3a5b900d8d96b
- https://github.com/SteeltoeOSS/Steeltoe/commit/da6c604decd992f61aeef763f5814102dcb088c7