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FKIE_CVE-2026-54168

Vulnerability from fkie_nvd - Published: 2026-09-15 15:17 - Updated: 2026-09-17 15:16
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
Pipelines-as-Code is a CI/CD system that lets users define Tekton pipelines in source code repositories. Prior to 0.37.8, 0.39.6, 0.42.1, and 0.48.0, a GitHub App installation token created during webhook processing is not scoped to the repository that triggered the event when the App is installed across multiple repositories. A user with push access to one repository can submit a PipelineRun containing a pipelinesascode.tekton.dev/task remote task annotation that targets a private repository in the same installation. When ScopeTokenToListOfRepos returns no explicit scope, the missing triggering repository ID leaves the token able to access the entire installation. Pipelines-as-Code resolves and inlines the remote private task with that token, disclosing the repository's Tekton definitions. The demonstrated impact is read-only and does not provide write access. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0.
References
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/commit/001782829e82b83ecb3da903f5a024ca0826b64c
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.39.6
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.42.1
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.48.0
security-advisories@github.comhttps://github.com/tektoncd/pipelines-as-code/security/advisories/GHSA-6f2p-296r-cc28
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "pipelines-as-code",
          "vendor": "tektoncd",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.37.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.38.0, \u003c 0.39.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.40.0, \u003c 0.42.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.43.0, \u003c 0.48.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Pipelines-as-Code is a CI/CD system that lets users define Tekton pipelines in source code repositories. Prior to 0.37.8, 0.39.6, 0.42.1, and 0.48.0, a GitHub App installation token created during webhook processing is not scoped to the repository that triggered the event when the App is installed across multiple repositories. A user with push access to one repository can submit a PipelineRun containing a pipelinesascode.tekton.dev/task remote task annotation that targets a private repository in the same installation. When ScopeTokenToListOfRepos returns no explicit scope, the missing triggering repository ID leaves the token able to access the entire installation. Pipelines-as-Code resolves and inlines the remote private task with that token, disclosing the repository\u0027s Tekton definitions. The demonstrated impact is read-only and does not provide write access. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0."
    }
  ],
  "id": "CVE-2026-54168",
  "lastModified": "2026-09-17T15:16:47.743",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54168",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-17T14:30:42.954463Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-15T15:17:17.887",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/commit/001782829e82b83ecb3da903f5a024ca0826b64c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.39.6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.42.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.48.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tektoncd/pipelines-as-code/security/advisories/GHSA-6f2p-296r-cc28"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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