{"id":"CVE-2026-72764","aliases":["GHSA-9cmh-xcqm-5hqr"],"url":"https://o3.security/vulnerability/CVE-2026-72764","summary":"n8n before 1.123.67 Module Cache Poisoning via Code Node","details":"## Impact\n\nn8n's JavaScript task runner shared one module cache across all users' Code-node executions, so a user able to run a Code node could poison a cached module and alter other users' Code-node executions on the same runner, affecting their confidentiality, integrity, or availability.\n\nThis is a cross-user isolation break within a single n8n instance. It does not constitute a sandbox escape or remote code execution. All multi-user n8n instances running the JS task runner with built-in or external modules enabled are affected.\n\n## Patches\n\nThe issue has been fixed in n8n versions 1.123.67, 2.31.5, and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable built-in and external module access in Code nodes by unsetting `NODE_FUNCTION_ALLOW_BUILTIN` and `NODE_FUNCTION_ALLOW_EXTERNAL`, which removes the poisonable module surface.\n- Use the external runner mode with a dedicated runner per user or project if your deployment supports it.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","published":"2026-08-11T12:17:05.590Z","modified":"2026-10-21T02:30:32.468802766Z","cvss":null,"epss":{"score":0.00374,"percentile":0.30885,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"n8n","fixedVersion":"1.123.67"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.32.1"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.31.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72764.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-9cmh-xcqm-5hqr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72764"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-before-module-cache-poisoning-via-code-node"},{"type":"PACKAGE","url":"https://github.com/n8n-io/n8n"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.67"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.31.5"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.32.1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:30:32.468802766Z"}}