Know every vulnerabilitybefore it knows you.
DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.
GHSA-6f2p-296r-cc28
github.com/openshift-pipelines/pipelines-as-codegithub.com/openshift-pipelines/pipelines-as-codegithub.com/openshift-pipelines/pipelines-as-codeImpact
When Pipelines-as-Code is configured with a GitHub App installed across multiple repositories, the installation token issued during webhook processing is not scoped to the triggering repository by default. The token retains access to all repositories in the GitHub App installation.
This allows a user with push access to any repository in the installation to craft a PipelineRun with a remote task annotation pointing at a private repository in the same installation:
pipelinesascode.tekton.dev/task: "https://github.com/org/private-repo/blob/main/.tekton/secret-task.yaml"
Pipelines-as-Code resolves and inlines the remote task using the unscoped token, exposing the contents of the private repository's Tekton definitions. This is a read-only confidentiality breach, no write access is exposed.
Patches
The fix extracts the repository ID from the webhook payload during initial parsing so that it is available for later use. It then adds a fallback in the client setup path so that when no explicit scoping configuration is present and ScopeTokenToListOfRepos returns empty, the token is re-issued scoped to the triggering repository's ID rather than retaining access to the entire installation. The initial token remains unscoped so that the extra-repos lookup can still discover and resolve additional repositories when configured.
The fix is available in v0.48.0. Supported backport releases will be added here after release tags are published.
Workarounds
Limit the GitHub App installation to only the repositories that require Pipelines-as-Code. Avoid org-wide installations or mixed-trust installations where repositories with different access requirements share the same GitHub App. This restricts the blast radius of the unscoped token to only the repositories that are explicitly selected during App installation.
Credits
Reported and fixed by the Pipelines-as-Code maintainers.
Upload your own SBOM in CycloneDX 1.6 or higher (JSON) directly here to check your vulnerabilities.
Drag and drop some file here, or click to select
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
Browse More
Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.
Checkout DevGuard