{"id":"CVE-2026-45732","revision":null,"records":[{"revision":"00f97be4d5504440a0dc9c833b2dba0a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45732","aliases":[],"title":"n8n: Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints","description":"n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, the OAuth1 and OAuth2 credential reconnect endpoints authorized access using credential:read rather than credential:update. An authenticated user with read-only access to a shared credential could initiate an OAuth reconnect flow and overwrite the stored token material for that credential with tokens bound to an external account they control. Workflows relying on the affected credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of shared integrations. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.","state":0,"publishedAt":"2026-06-23T15:52:19.501+00:00","modifiedAt":"2026-06-26T19:31:18.368+00:00","affected":[{"ecosystem":"Vendor product","name":"n8n","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n8n-io\",\n                    \"product\": \"n8n\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.123.43\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0-rc.0, < 2.20.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.21.0, < 2.21.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":8.3,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-6h4j-wcr9-2vg7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45732","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45732","identifiers":["CVE-2026-45732"]},"retained":false,"historicalAffected":[]},{"revision":"a26c88d3addc4b249bdfd70763e3f079","observedAt":"2026-11-07T10:36:10.97+00:00","statement":{"source":"euvd","id":"EUVD-2026-38482","aliases":["CVE-2026-45732","GHSA-6h4j-wcr9-2vg7"],"title":"n8n is an open source workflow automation platform. 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This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":8.3,"severity":null}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-6h4j-wcr9-2vg7"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38482","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 23, 2026, 3:52:19 PM","dateUpdated":"Jun 26, 2026, 7:31:18 PM"},"relatedAdvisories":[{"id":"WID-SEC-W-2026-1519","title":"n8n: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2026-44789","CVE-2026-44790","CVE-2026-44791","CVE-2026-44792","CVE-2026-45732","CVE-2026-56348"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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Prior to 1.123.43, 2.22.1, and 2.20.7, the OAuth1 and OAuth2 credential reconnect endpoints authorized access using credential:read rather than credential:update. An authenticated user with read-only access to a shared credential could initiate an OAuth reconnect flow and overwrite the stored token material for that credential with tokens bound to an external account they control. Workflows relying on the affected credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of shared integrations. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.","state":0,"publishedAt":"2026-06-23T17:17:00.7+00:00","modifiedAt":"2026-10-26T11:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/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","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-6h4j-wcr9-2vg7"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45732","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-639"],"productCriteria":["cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-06-23T17:17:00.700","lastModified":"2026-10-26T11:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-45732","identifiers":["CVE-2026-45732"]},"retained":false,"historicalAffected":[]},{"revision":"6c1edd948b9f445cb9631483c1e65c99","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-6h4j-wcr9-2vg7","aliases":["CVE-2026-45732"],"title":"n8n Has a Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints","description":"## Impact\nThe OAuth1 and OAuth2 credential reconnect endpoints authorized access using `credential:read` rather than `credential:update`. An authenticated user with read-only access to a shared credential could initiate an OAuth reconnect flow and overwrite the stored token material for that credential with tokens bound to an external account they control. Workflows relying on the affected credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of shared integrations.\n\nThis issue affects instances where credentials are shared with other users or across projects.\n\n## Patches\nThe issue has been fixed in n8n versions 1.123.43, 2.20.7, and 2.21.1. 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 credential sharing to fully trusted users only.\n- Audit shared credentials for unexpected OAuth token changes and revoke any tokens that may have been replaced.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.\n\n---\nn8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility.\n\nCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","state":0,"publishedAt":"2026-05-14T16:18:14+00:00","modifiedAt":"2026-07-20T13:45:33.5761368+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.123.43"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.21.0"},{"kind":"fixed","version":"2.21.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0-rc.0"},{"kind":"fixed","version":"2.20.7"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-6h4j-wcr9-2vg7","https://nvd.nist.gov/vuln/detail/CVE-2026-45732","https://github.com/n8n-io/n8n"],"sourceUrl":"https://github.com/advisories/GHSA-6h4j-wcr9-2vg7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6h4j-wcr9-2vg7","identifiers":["GHSA-6h4j-wcr9-2vg7","CVE-2026-45732"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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