{"id":"CVE-2026-65591","aliases":["GHSA-pm35-fqvh-cq5g"],"url":"https://o3.security/vulnerability/CVE-2026-65591","summary":"n8n before 1.123.64 Sanitizer Bypass Remote Code Execution","details":"n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.","published":"2026-07-22T11:21:40.743Z","modified":"2026-08-12T03:51:44.443521540Z","cvss":null,"epss":{"score":0.00481,"percentile":0.39736,"asOf":"2026-09-04"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"n8n","fixedVersion":"1.123.64"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.30.1"},{"ecosystem":"npm","name":"n8n","fixedVersion":"2.29.8"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65591.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65591"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.443521540Z"}}