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    1 vulnerability found for Steeltoe.Configuration.Abstractions by SteeltoeOSS

    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 (v2.0.3)
    CWE
    • CWE-312 - Cleartext Storage of Sensitive Information
    • CWE-732 - Incorrect Permission Assignment for Critical Resource
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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            "other": {
              "content": {
                "id": "CVE-2026-50267",
                "options": [
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                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-18T19:10:46.830420Z",
                "version": "2.0.3"
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-18T19:11:04.674Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "product": "Steeltoe.Configuration.Abstractions",
          "vendor": "SteeltoeOSS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 4.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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/\u003cpid\u003e/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`."
        }
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
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            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
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      "problemTypes": [
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              "cweId": "CWE-312",
              "description": "CWE-312: Cleartext Storage of Sensitive Information",
              "lang": "en",
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          ]
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        {
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-17T21:57:09.043Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-rxrh-4j9h-xgg9",
          "tags": [
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          "url": "https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-rxrh-4j9h-xgg9"
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      "source": {
        "advisory": "GHSA-rxrh-4j9h-xgg9",
        "discovery": "UNKNOWN"
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      "title": "Steeltoe: TLS private keys written to /tmp with default permissions, never deleted"
    }
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50267",
    "datePublished": "2026-06-17T21:57:09.043Z",
    "dateReserved": "2026-06-04T16:26:05.984Z",
    "dateUpdated": "2026-06-18T19:11:04.674Z",
    "state": "PUBLISHED"
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