CVE-2024-54132

Name of the Vulnerable Software and Affected Versions GitHub CLI versions prior to 2.63.1

Description A security issue has been identified in GitHub CLI that could create or overwrite files in unintended directories when users download a malicious GitHub Actions workflow artifact through gh run download. This issue stems from a GitHub Actions workflow artifact named .. when downloaded using gh run download. The artifact name and --dir flag are used to determine the artifact’s download path. When the artifact is named .., the resulting files within the artifact are extracted exactly 1 directory higher than the specified --dir flag value.

Recommendations Upgrade gh to 2.63.1 to resolve the issue. As a temporary workaround, consider implementing additional validation to ensure artifact filenames do not contain potentially dangerous patterns, such as .., to prevent path traversal risks. Avoid using the --dir flag with untrusted artifact names until the issue is resolved.