{"id":"CVE-2026-59254","aliases":["EUVD-2026-44634","GHSA-2434-3x6q-8r99","GHSA-3j7v-fhjg-6rh2"],"status":"published","title":"n8n - External Secrets Disclosure via Workflow Node Expressions","description":"n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00364,"percentile":0.30552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-639"],"published":"2026-07-15T11:25:34Z","modified":"2026-11-02T02:46:28Z","fixes":[{"ecosystem":"npm","package":"n8n","fixed_in":["2.28.1","2.27.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.28.0"},{"fixed":"2.28.1"}]}]},{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.27.4"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"2.28.0"},{"fixed":"2.28.1"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.27.4"}]}]}],"products":[{"vendor":"n8n","product":"n8n"},{"vendor":"n8n-io","product":"n8n"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99","tags":["vendor-advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions","tags":["third-party-advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59254","tags":["advisory"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","tags":["web"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-2434-3x6q-8r99"},{"url":"https://github.com/advisories/GHSA-3j7v-fhjg-6rh2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59254.json","tags":["advisory"]},{"url":"https://github.com/n8n-io/n8n","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-59254","title":"n8n - External Secrets Disclosure via Workflow Node Expressions","description":"n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"published","published":"2026-07-15T11:25:34.866Z","modified":"2026-10-29T21:16:03.599Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:19:58.944663Z"}],"euvd":[{"id":"EUVD-2026-44634","description":"n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"published","published":"2026-07-15T11:25:34Z","modified":"2026-10-29T21:16:03Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:14.250155Z"}],"ghsa":[{"id":"GHSA-2434-3x6q-8r99","title":"n8n: External Secrets Accessible via Workflow Expressions Outside Credentials","description":"## Impact\nExternal secrets were incorrectly resolved in workflow node expressions, where they are not intended to be available. An authenticated user with project editor access could read the plaintext value of external secrets by referencing them in a node expression, without needing explicit secrets access permissions.\n\nThis issue only affects instances with the external secrets feature configured.\n\n## Patches\nThe issue has been fixed in n8n versions 2.27.4 and 2.28.1. 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 project membership to fully trusted users only.\n- Avoid granting editor access to projects on instances where external secrets are configured.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","status":"published","published":"2026-07-22T22:23:29Z","modified":"2026-07-22T22:23:31Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:40:51.375752Z"},{"id":"GHSA-3j7v-fhjg-6rh2","title":"Duplicate Advisory: n8n: External Secrets Accessible via Workflow Expressions Outside Credentials","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-2434-3x6q-8r99. This link is maintained to preserve external references.\n\n## Original Description\n\nn8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"withdrawn","published":"2026-07-15T12:32:03Z","modified":"2026-07-22T22:23:06Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:40:51.375752Z"}],"nvd":[{"id":"CVE-2026-59254","description":"n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"published","published":"2026-07-15T12:18:17.663Z","modified":"2026-10-29T19:17:24.713Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:29.879716Z"}],"osv":[{"id":"CVE-2026-59254","title":"n8n - External Secrets Disclosure via Workflow Node Expressions","description":"n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"published","published":"2026-07-15T11:25:34.866Z","modified":"2026-11-02T02:46:28.529575807Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"GHSA-2434-3x6q-8r99","title":"n8n: External Secrets Accessible via Workflow Expressions Outside Credentials","description":"## Impact\nExternal secrets were incorrectly resolved in workflow node expressions, where they are not intended to be available. An authenticated user with project editor access could read the plaintext value of external secrets by referencing them in a node expression, without needing explicit secrets access permissions.\n\nThis issue only affects instances with the external secrets feature configured.\n\n## Patches\nThe issue has been fixed in n8n versions 2.27.4 and 2.28.1. 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 project membership to fully trusted users only.\n- Avoid granting editor access to projects on instances where external secrets are configured.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","status":"published","published":"2026-07-22T22:23:29Z","modified":"2026-07-22T22:31:07.314203874Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:46:33.520522Z"},{"id":"GHSA-3j7v-fhjg-6rh2","title":"Duplicate Advisory: n8n: External Secrets Accessible via Workflow Expressions Outside Credentials","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-2434-3x6q-8r99. This link is maintained to preserve external references.\n\n## Original Description\n\nn8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.","status":"withdrawn","published":"2026-07-15T12:32:03Z","modified":"2026-07-22T22:31:07.31585074Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:46:35.747385Z"}]}}