CVE-2026-50267 (GCVE-0-2026-50267)

Vulnerability from cvelistv5 – Published: 2026-06-17 21:57 – Updated: 2026-06-18 19:11
VLAI
Title
Steeltoe: TLS private keys written to /tmp with default permissions, never deleted
Summary
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Configuration.Abstractions 4.0.0 through 4.1.0, when MySQL or PostgreSQL service bindings from `VCAP_SERVICES` 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`. Steeltoe.Configuration.Abstractions version 4.2.0 patches the issue. If an immediate upgrade is not possible, prevent other processes from running in the container under a different UID with access to `/tmp`.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 19:10 UTC
CWE
  • CWE-312 - Cleartext Storage of Sensitive Information
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7886 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
SteeltoeOSS Steeltoe.Configuration.Abstractions Affected: >= 4.0.0, < 4.2.0
guessed Create a notification for this product.
Show details on NVD website
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