Threat Intelligence Database

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, the GitHub App provider accepts X-GitHub-Enterprise-Host as the API host while processing webhook events containing an installation.id, before webhook signature validation or confirmation that the host matches the repository URL in the signed payload. An unauthenticated attacker who can reach the webhook endpoint can select an attacker-controlled host and cause the controller to send a locally signed GitHub App JWT to that service. The exposed JWT may be used to attempt to mint installation access tokens during its validity window, subject to the GitHub App installation and permissions. The incoming webhook installation-lookup path is also affected, but exploitation of that path requires the valid incoming webhook secret for the target Repository CR. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0.

CVE-2026-54168 is an improper privilege management vulnerability in Tekton Pipelines-as-Code. Before fixed versions, a GitHub App installation token created during webhook processing was not properly scoped to the triggering repository when the App was installed across multiple repositories. This allowed a user with push access to one repository to read Tekton pipeline definitions from private repositories within the same installation. The vulnerability results in read-only access disclosure of pipeline definitions and does not allow write operations. The issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0.