{"api_version":"1","generated_at":"2026-07-25T00:47:38+00:00","cve":"CVE-2023-27581","urls":{"html":"https://cve.report/CVE-2023-27581","api":"https://cve.report/api/cve/CVE-2023-27581.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-27581","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-27581"},"summary":{"title":"CVE-2023-27581","description":"github-slug-action is a GitHub Action to expose slug value of GitHub environment variables inside of one's GitHub workflow. Starting in version 4.0.0` and prior to version 4.4.1, this action uses the `github.head_ref` parameter in an insecure way. This vulnerability can be triggered by any user on GitHub on any workflow using the action on pull requests. They just need to create a pull request with a branch name, which can contain the attack payload. This can be used to execute code on the GitHub runners and to exfiltrate any secrets one uses in the CI pipeline. 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