{"id":"CVE-2026-72763","aliases":["GHSA-cj9h-qx8g-pq2g"],"url":"https://o3.security/vulnerability/CVE-2026-72763","summary":"n8n before 1.123.67 Credential Exfiltration via Sub-Workflow","details":"## Impact\n\nn8n's credential-access checks validated only a node's top-level credentials, not credentials referenced inside an Execute Sub-workflow node's inline workflow JSON. A member with editor access to a shared workflow could reference a credential they were not permitted to use inside that inline JSON; it passed both save-time and runtime validation and resolved in the parent workflow's project context, letting the member use or exfiltrate a credential they could not otherwise access.\n\nExploitation requires workflow sharing to be enabled and the attacker to have been explicitly granted Editor access to a shared workflow. The attacker must also know the target credential's ID.\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 workflow sharing to fully trusted users only, and avoid granting Editor access to untrusted members on workflows that use sensitive credentials.\n- Audit shared workflows for Execute Sub-workflow nodes with Source = \"Parameter\" and review their inline workflow definitions for unexpected credential references.\n- Restrict network egress from the n8n instance to prevent connections to attacker-controlled endpoints.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","published":"2026-08-11T12:17:04.905Z","modified":"2026-09-03T03:47:17.633100965Z","cvss":null,"epss":{"score":0.00209,"percentile":0.11221,"asOf":"2026-09-16"},"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":{"url":"https://github.com/n8n-io/n8n/commit/f69dfc6dd2178a14ea1624d2e1d403c2e755042f","label":"n8n-io/n8n@f69dfc6"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72763.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-cj9h-qx8g-pq2g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72763"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-before-credential-exfiltration-via-sub-workflow"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/commit/f69dfc6dd2178a14ea1624d2e1d403c2e755042f"},{"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":"2026-09-03T03:47:17.633100965Z"}}