Bug 2533851 (CVE-2026-54168)

Summary:	CVE-2026-54168 github.com/openshift-pipelines/pipelines-as-code: Pipelines-as-Code: Information disclosure via unscoped GitHub App installation token
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dhanak, drosa, dsimansk, gbenhaim, kingland, mnovotny, niyer, sausingh, sdawley, twaugh
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Pipelines-as-Code. A GitHub App installation token, created during webhook processing, is not properly scoped when the App is installed across multiple repositories. This allows a user with push access to one repository to access private repositories within the same installation by submitting a PipelineRun with a remote task annotation. This vulnerability leads to the disclosure of Tekton definitions from private repositories.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-15 14:48:02 UTC

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.