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NuGet package

steeltoe.configuration.abstractions

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 4.7NuGetPublished

    Steeltoe: TLS private keys written to /tmp with default permissions, never deleted

    CVE-2026-50267 · GHSA-rxrh-4j9h-xgg9

    Affected
    • NuGet steeltoe.configuration.abstractions >= 4.0.0, <= 4.1.0
    Fixed in
    4.2.0· Vendor fix available
    Issue
    When MySQL or PostgreSQL service bindings from VCAPSERVICES include TLS client credentials, the Connectors library writes those credentials to temporary files in Path.GetTempPath() using File.CreateText. On Linux, File.CreateText creates files with mode 0644 (world-readable) under the process umask, and the files are never deleted. The same key material is protected at mode 0400 in /proc/<pid/environ. Impact Any process co-located in the container that runs as a different UID can read the TLS client private key from /tmp and use it to impersonate the application when connecting to the backing database over mutual TLS. Affected configuration - Application is deployed on Cloud Foundry or another environment that populates VCAPSERVICES with a MySQL or PostgreSQL service binding that includes sslKey credentials. - A process running as a different UID shares the container's filesystem. Mitigations If an immediate upgrade is not possible, prevent other processes from running in the…

    Recommended action: Upgrade to 4.2.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →