{"id":"CVE-2024-53859","aliases":["GHSA-55v3-xh23-96gh","GO-2024-3295"],"title":"`auth.TokenForHost` violates GitHub host security boundary when sourcing authentication token within a codespace","summary":"`auth.TokenForHost` violates GitHub host security boundary when sourcing authentication token within a codespace","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L","vendor":"cli","product":"github.com/cli/go-gh/v2","ecosystem":"go","affected":["github.com/cli/go-gh/v2 < 2.11.1","github.com/cli/go-gh"],"patched":["github.com/cli/go-gh/v2 2.11.1"],"published":"2024-11-27","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:20.344866743Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-55v3-xh23-96gh","references":[{"url":"https://github.com/cli/go-gh/security/advisories/GHSA-55v3-xh23-96gh"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53859"},{"url":"https://docs.github.com/en/apps/using-github-apps/reviewing-and-revoking-authorization-of-github-apps#reviewing-your-authorized-github-apps"},{"url":"https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-security-log"},{"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"},{"url":"https://docs.github.com/en/enterprise-cloud@latest/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens"},{"url":"https://github.com/cli/go-gh"},{"url":"https://github.com/cli/go-gh/blob/71770357e0cb12867d3e3e288854c0aa09d440b7/pkg/auth/auth.go#L73-L77"},{"url":"https://pkg.go.dev/vuln/GO-2024-3295"}],"tags":["osv","go"],"epss":0.00531,"epssPercentile":0.43886,"ingestedAt":"2026-09-12T03:13:01.754Z","slug":"CVE-2024-53859","body":"## Overview\n\n### 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\n\n## Affected packages\n\n- `github.com/cli/go-gh/v2 < 2.11.1`\n- `github.com/cli/go-gh`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/cli/go-gh/v2 2.11.1`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}