CVE-2026-50200: Steeltoe.Management.Endpoint Steeltoe's Env Sanitizer Misses Connection Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q62h-354g-5r85",
  "modified" : "2026-07-02T20:31:11Z",
  "published" : "2026-07-02T20:31:11Z",
  "aliases" : [ "CVE-2026-50200" ],
  "summary" : "Steeltoe's env sanitizer misses connection strings — leaks embedded DB passwords",
  "details" : "### Summary\n\nThe `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.\n\n### Impact\n\nAny caller who can reach `/actuator/env` can receive connection strings containing plaintext credentials. Those credentials enable direct connection to the backing database, bypassing the application tier.\n\n### Affected configuration\n\n- Application configuration contains credentials in `ConnectionStrings:*` or `*:ConnectionString` keys.\n- On standard deployments: `env` is added to `Management:Endpoints:Actuator:Exposure:Include`. This is not the default.\n- On Cloud Foundry: the `/cloudfoundryapplication/env` path is accessible to any authenticated CF user with `read_basic_data` permissions (Space Auditor and above) regardless of the exposure configuration.\n\n### Mitigations\n\nIf an immediate upgrade is not possible:\n\n- On the standard path, remove `env` from the actuator exposure list.\n- Add `.*connectionstring.*` to `KeysToSanitize` as a defense-in-depth measure for both paths.\n- Require authorization on actuator endpoints.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Steeltoe.Management.Endpoint"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.2.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.1.0"
    }
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Steeltoe.Management.EndpointCore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.4.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.3.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-q62h-354g-5r85"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-50200"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SteeltoeOSS/Steeltoe/commit/bef9f14b710232fca3fbe87e48fdd1b9e6b60d43"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SteeltoeOSS/Steeltoe/commit/e50cd31a429b191841120f0d38fa9dda8f751b0a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/SteeltoeOSS/Steeltoe"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-319" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-02T20:31:11Z",
    "nvd_published_at" : "2026-06-17T22:16:24Z"
  }
}