{"id":"EUVD-2026-74276","revision":null,"records":[{"revision":"d2857ad0c59547abad4784b27bc3ef1d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-86080","aliases":[],"title":"n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open","description":"n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static data then retained webhookId without webhookSecret, and X-Hub-Signature-256 verification accepted deliveries without a stored secret. The affected logic includes packages/nodes-base/nodes/Github/GithubTriggerHelpers.ts and the 422 webhook reuse path. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.","state":0,"publishedAt":"2026-09-08T21:25:48.009+00:00","modifiedAt":"2026-09-09T13:16:31.787+00:00","affected":[{"ecosystem":"Vendor product","name":"n8n","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n8n-io\",\n                    \"product\": \"n8n\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.38.0, < 2.38.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0, < 2.37.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"< 1.123.76\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76","https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7","https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-86080","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-86080","identifiers":["CVE-2026-86080"]},"retained":false,"historicalAffected":[]},{"revision":"58cc333f9a9c480c938dcd4c07c8c098","observedAt":"2026-11-13T18:04:04.453+00:00","statement":{"source":"euvd","id":"EUVD-2026-74276","aliases":["CVE-2026-86080","GHSA-5m98-cgcr-xx3q"],"title":"n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static…","description":"n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static data then retained webhookId without webhookSecret, and X-Hub-Signature-256 verification accepted deliveries without a stored secret. The affected logic includes packages/nodes-base/nodes/Github/GithubTriggerHelpers.ts and the 422 webhook reuse path. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":null}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76","https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7","https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-74276","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 8, 2026, 9:25:48 PM","dateUpdated":"Sep 9, 2026, 1:16:31 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-74276","identifiers":["EUVD-2026-74276","CVE-2026-86080","GHSA-5m98-cgcr-xx3q"]},"retained":false,"historicalAffected":[]},{"revision":"29c9a08fedfb4b2d8a788ae9709894ce","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-86080","aliases":[],"title":"n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static…","description":"n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static data then retained webhookId without webhookSecret, and X-Hub-Signature-256 verification accepted deliveries without a stored secret. The affected logic includes packages/nodes-base/nodes/Github/GithubTriggerHelpers.ts and the 422 webhook reuse path. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.","state":0,"publishedAt":"2026-09-08T22:19:16.953+00:00","modifiedAt":"2026-09-11T18:21:38.147+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/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","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76","https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7","https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2","https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86080","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-347"],"productCriteria":["cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-09-08T22:19:16.953","lastModified":"2026-09-11T18:21:38.147"},"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-2026-86080","identifiers":["CVE-2026-86080"]},"retained":false,"historicalAffected":[]},{"revision":"ec54d468483143889fcc67506ee5cee8","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-5m98-cgcr-xx3q","aliases":["CVE-2026-86080"],"title":"n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open","description":"## Impact\n\nThe GitHub Trigger generated a signing secret when it registered a webhook and verified `X-Hub-Signature-256` on each delivery. When GitHub answered the create request with a 422 because a webhook for the URL already existed, the node adopted the remote hook but kept only its id and events, discarding the secret it had generated. Deliveries to that workflow's webhook URL were then accepted from anyone. The patch re-fetches the existing hook by its stored id, re-applies the signing secret, and makes verification fail closed when no secret is stored.\n\n## Patches\n\nThe issue has been fixed in n8n versions 1.123.76, 2.37.7, and 2.38.2. 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- Deactivate and reactivate any GitHub Trigger workflows to force a fresh webhook registration with a new secret, provided the remote GitHub hook has been deleted first so that the 422 reuse path is not taken again.\n- Restrict network access to the n8n webhook endpoint to GitHub's published IP ranges only.\n- Audit GitHub Trigger workflow static data for entries that contain a `webhookId` but no `webhookSecret`, and treat those workflows as unprotected until reactivated successfully.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-09-10T21:06:37+00:00","modifiedAt":"2026-09-10T21:15:05.057956+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.123.76"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.38.0"},{"kind":"fixed","version":"2.38.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0"},{"kind":"fixed","version":"2.37.7"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q","https://nvd.nist.gov/vuln/detail/CVE-2026-86080","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76","https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7","https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"],"sourceUrl":"https://github.com/advisories/GHSA-5m98-cgcr-xx3q","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-5m98-cgcr-xx3q","identifiers":["GHSA-5m98-cgcr-xx3q","CVE-2026-86080"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-14T23:32:08.8950907+00:00","complete":true,"records":1781,"lastAttemptAt":"2026-11-14T23:32:08.8950907+00:00","lastSuccessAt":"2026-11-14T23:32:09.1622394+00:00","error":null,"lastVerifiedAt":"2026-11-14T23:32:09.1622409+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-f4305fb3b9417bd97547e9305731a80b9463cd5f49ef853b3cd62960cad53a57-b1b3898d5794e2254d7800e3fe3019a3916d0abcec27dcc333172b795590268a","complete":true,"records":425757,"lastAttemptAt":"2026-11-14T23:32:08.2543926+00:00","lastSuccessAt":"2026-11-14T23:32:08.2210295+00:00","error":null,"lastVerifiedAt":"2026-11-14T23:32:08.2543926+00:00","snapshotPublishedAt":"2026-11-14T23:27:44+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-9dcab1ad30e84a0ea03d6fbdd614465a","complete":true,"records":13821,"lastAttemptAt":"2026-11-14T23:32:58.4836293+00:00","lastSuccessAt":"2026-11-14T23:24:03.134+00:00","error":null,"lastVerifiedAt":"2026-11-14T23:24:03.134+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13874,"expectedIdentifiers":13874,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. 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