{"schema_version":"1.7.3","id":"GHSA-55v3-xh23-96gh","published":"2024-11-27T21:43:03Z","modified":"2026-02-04T02:25:17.878897Z","aliases":["CVE-2024-53859","GO-2024-3295"],"related":["CGA-7v44-739c-wq94"],"summary":"`auth.TokenForHost` violates GitHub host security boundary when sourcing authentication token within a codespace","details":"### Summary\n\nA security vulnerability has been identified in `go-gh` that could leak authentication tokens intended for GitHub hosts to non-GitHub hosts when within a codespace.\n\n### Details\n\n`go-gh` sources authentication tokens from different environment variables depending on the host involved:\n\n- `GITHUB_TOKEN`, `GH_TOKEN` for GitHub.com and ghe.com\n- `GITHUB_ENTERPRISE_TOKEN`, `GH_ENTERPRISE_TOKEN` for GitHub Enterprise Server\n\nPrior to `2.11.1`, `auth.TokenForHost` could source a token from the `GITHUB_TOKEN` environment variable for a host other than GitHub.com or ghe.com when [within a codespace](https://github.com/cli/go-gh/blob/71770357e0cb12867d3e3e288854c0aa09d440b7/pkg/auth/auth.go#L73-L77).\n\nIn `2.11.1`, `auth.TokenForHost` will only source a token from the `GITHUB_TOKEN` environment variable for GitHub.com or ghe.com hosts.\n\n### Impact\n\nSuccessful exploitation could send authentication token to an unintended host. \n\n### Remediation and mitigation\n\n1. Upgrade `go-gh` to `2.11.1`\n2. Advise extension users to regenerate authentication tokens:\n    - [Personal access tokens](https://docs.github.com/en/enterprise-cloud@latest/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens)\n    - [GitHub CLI OAuth app](https://docs.github.com/en/apps/using-github-apps/reviewing-and-revoking-authorization-of-github-apps#reviewing-your-authorized-github-apps)\n3. Advise extension users to review their personal [security log](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-security-log) and any relevant [audit logs](https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/identifying-audit-log-events-performed-by-an-access-token) for actions associated with their account or enterprise\n","affected":[{"package":{"name":"github.com/cli/go-gh/v2","ecosystem":"Go","purl":"pkg:golang/github.com/cli/go-gh/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.1"}]}],"database_specific":{"last_known_affected_version_range":"<= 2.11.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-55v3-xh23-96gh/GHSA-55v3-xh23-96gh.json"}},{"package":{"name":"github.com/cli/go-gh","ecosystem":"Go","purl":"pkg:golang/github.com/cli/go-gh"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"last_known_affected_version_range":"< 2.11.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/11/GHSA-55v3-xh23-96gh/GHSA-55v3-xh23-96gh.json"}}],"references":[{"type":"WEB","url":"https://github.com/cli/go-gh/security/advisories/GHSA-55v3-xh23-96gh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53859"},{"type":"WEB","url":"https://docs.github.com/en/apps/using-github-apps/reviewing-and-revoking-authorization-of-github-apps#reviewing-your-authorized-github-apps"},{"type":"WEB","url":"https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-security-log"},{"type":"WEB","url":"https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/identifying-audit-log-events-performed-by-an-access-token"},{"type":"WEB","url":"https://docs.github.com/en/enterprise-cloud@latest/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens"},{"type":"PACKAGE","url":"https://github.com/cli/go-gh"},{"type":"WEB","url":"https://github.com/cli/go-gh/blob/71770357e0cb12867d3e3e288854c0aa09d440b7/pkg/auth/auth.go#L73-L77"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2024-3295"}],"database_specific":{"cwe_ids":["CWE-200"],"github_reviewed":true,"github_reviewed_at":"2024-11-27T21:43:03Z","nvd_published_at":"2024-11-27T22:15:05Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"}]}