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.
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History
Thu, 17 Sep 2026 20:30:00 +0000
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Tektoncd
Tektoncd pipelines-as-code |
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Tektoncd
Tektoncd pipelines-as-code |
Thu, 17 Sep 2026 15:30:00 +0000
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ssvc
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Thu, 17 Sep 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Tue, 15 Sep 2026 14:45:00 +0000
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| Description | 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. | |
| Title | Pipelines-as-Code: Unscoped GitHub App installation token allows unauthorized access to private repositories via remote task resolution | |
| Weaknesses | CWE-269 CWE-862 |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-15T14:27:44.344Z
Updated: 2026-09-17T14:30:57.237Z
Reserved: 2026-06-11T21:46:52.381Z
Link: CVE-2026-54168
Updated: 2026-09-17T14:30:49.869Z
Status : Awaiting Analysis
Published: 2026-09-15T15:17:17.887
Modified: 2026-09-30T17:43:24.057
Link: CVE-2026-54168