{"id":"GHSA-m63j-689w-3j35","summary":"n8n is Vulnerable to Credential Theft via Name-Based Resolution and Permission Checker Bypass in Community Edition","details":"## Impact\nAn authenticated user with the `global:member` role could exploit chained authorization flaws in n8n's credential pipeline to steal plaintext secrets from generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) belonging to other users on the same instance.\n\nThe attack abuses a name-based credential resolution path that does not enforce ownership or project scope, combined with a bypass in the credentials permission checker that causes generic HTTP credential types to be skipped during pre-execution validation. Together, these flaws allow a member-role user to resolve another user's credential ID and execute a workflow that decrypts and uses that credential without authorization.\n\nNative integration credential types (e.g. `slackApi`, `openAiApi`, `postgres`) are not affected by this issue.\n\nThis vulnerability affects Community Edition only. Enterprise Edition has additional permission gates on workflow creation and execution that independently block this attack chain.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.27, 2.13.3, and 2.14.1. 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- Restrict instance access to fully trusted users only.\n- Audit credentials stored on the instance and rotate any generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) that may have been exposed.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","aliases":["CVE-2026-33663"],"modified":"2026-03-25T21:26:30.404638Z","published":"2026-03-25T21:08:33Z","database_specific":{"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-03-25T21:08:33Z","nvd_published_at":"2026-03-25T18:16:32Z","cwe_ids":["CWE-639"]},"references":[{"type":"WEB","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-m63j-689w-3j35"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33663"},{"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":"1.123.27"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-m63j-689w-3j35/GHSA-m63j-689w-3j35.json"}},{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.14.0"},{"fixed":"2.14.1"}]}],"versions":["2.14.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-m63j-689w-3j35/GHSA-m63j-689w-3j35.json"}},{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0-rc.0"},{"fixed":"2.13.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-m63j-689w-3j35/GHSA-m63j-689w-3j35.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H"}]}