Steeltoe's env sanitizer misses connection strings — leaks embedded DB passwords

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Summary

CVECVE-2026-50200
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-17 22:16:24 UTC
Updated2026-06-18 17:16:32 UTC
DescriptionSteeltoe 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-200 | CWE-319 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-319 CWE-319: Cleartext Transmission of Sensitive Information

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA SteeltoeOSS Steeltoe.Management.Endpoint affected < 4.2.0 Not specified
CNA SteeltoeOSS Steeltoe.Management.EndpointCore affected < 3.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/SteeltoeOSS/Steeltoe/commit/e50cd31a429b191841120f0d38fa9dda8... [email protected] github.com
github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-q62h... [email protected] github.com
github.com/SteeltoeOSS/Steeltoe/commit/bef9f14b710232fca3fbe87e48fdd1b9e... [email protected] github.com
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