{"id":"GHSA-44v6-jhgm-p3m4","summary":"n8n has a Python Task Runner Sandbox Escape Vulnerability","details":"## Impact\nAn authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container.\n\n- This issue only affects instances where the Python Task Runner is enabled.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Limit workflow creation and editing permissions to fully trusted users only.\n- Disable the Python Code node by adding `n8n-nodes-base.code` to the `NODES_EXCLUDE` environment variable, or disable the Python Task Runner entirely.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","aliases":["CVE-2026-42234"],"modified":"2026-05-08T01:51:10.104278Z","published":"2026-04-29T21:21:50Z","database_specific":{"github_reviewed_at":"2026-04-29T21:21:50Z","nvd_published_at":"2026-05-04T19:16:06Z","cwe_ids":["CWE-94"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42234"},{"type":"PACKAGE","url":"https://github.com/n8n-io/n8n"}],"affected":[{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.123.32"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-44v6-jhgm-p3m4/GHSA-44v6-jhgm-p3m4.json"}},{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.18.0"},{"fixed":"2.18.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-44v6-jhgm-p3m4/GHSA-44v6-jhgm-p3m4.json"}},{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.17.0"},{"fixed":"2.17.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-44v6-jhgm-p3m4/GHSA-44v6-jhgm-p3m4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}]}