CVE-2026-50200
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, the `Sanitizer` component in the Environment actuator redacts configuration values by matching the configuration key name against a suffix list. The default list (`password`, `secret`, `key`, `token`, `.*credentials.*`, `vcap_services`) does not cover the standard .NET pattern `ConnectionStrings:<name>` or Steeltoe Connectors' `Steeltoe:Client:<type>:Default:ConnectionString`. There is no value-based scrubbing, so full connection string values including embedded `Password=` and `user:pass@host` segments are returned verbatim in `/actuator/env` responses. Steeltoe.Management.Endpoint 4.2.0 and Steeltoe.Management.EndpointCore 3.4.0 patch the issue. If an immediate upgrade is not possible: On the standard path, remove `env` from the actuator exposure list; add `.*connectionstring.*` to `KeysToSanitize` as a defense-in-depth measure for both paths; and/or require authorization on actuator endpoints.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Steeltoe.Management.Endpoint | <= 4.1.0 | 4.2.0 |
| nuget | Steeltoe.Management.EndpointCore | <= 3.3.0 | 3.4.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-q62h-354g-5r85
- https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-q62h-354g-5r85
- https://nvd.nist.gov/vuln/detail/CVE-2026-50200
- https://github.com/SteeltoeOSS/Steeltoe/commit/bef9f14b710232fca3fbe87e48fdd1b9e6b60d43
- https://github.com/SteeltoeOSS/Steeltoe/commit/e50cd31a429b191841120f0d38fa9dda8f751b0a