{"id":"CVE-2022-35954","aliases":["GHSA-7r3h-m5j6-3q42"],"url":"https://o3.security/vulnerability/CVE-2022-35954","summary":"Delimiter injection vulnerability in @actions/core exportVariable","details":"## Impact\n\nThe `core.exportVariable` function uses a well known delimiter that attackers can use to break out of that specific variable and assign values to other arbitrary variables. Workflows that write untrusted values to the `GITHUB_ENV` file may cause the path or other environment variables to be modified without the intention of the workflow or action author.\n\n## Patches\n\nUsers should upgrade to `@actions/core v1.9.1`.\n\n## Workarounds\n\nIf you are unable to upgrade the `@actions/core` package, you can modify your action to ensure that any user input does not contain the delimiter `_GitHubActionsFileCommandDelimeter_` before calling `core.exportVariable`.\n\n## References\n\n[More information about setting-an-environment-variable in workflows](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-environment-variable)\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [`actions/toolkit`](https://github.com/actions/toolkit/issues)\n","published":"2022-08-13T23:40:09Z","modified":"2026-10-28T02:30:26.275843549Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@actions/core","fixedVersion":"1.9.1"}],"fix":{"url":"https://github.com/actions/toolkit/commit/4beda9cbc00ba6eefe387a937c21087ccb8ee9df","label":"actions/toolkit@4beda9c"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/35xxx/CVE-2022-35954.json"},{"type":"ADVISORY","url":"https://github.com/actions/toolkit/security/advisories/GHSA-7r3h-m5j6-3q42"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-35954"},{"type":"FIX","url":"https://github.com/actions/toolkit/commit/4beda9cbc00ba6eefe387a937c21087ccb8ee9df"},{"type":"PACKAGE","url":"https://github.com/actions/toolkit"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:26.275843549Z"}}