{"cve":"CVE-2026-86080","nvd":{"published":"2026-09-08T22:19:16.953","modified":"2026-09-11T18:21:38.147","status":"Analyzed","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.","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":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-347"],"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"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-86080","score":0.00259,"percentile":0.17654,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5m98-cgcr-xx3q","url":"https://osv.dev/vulnerability/GHSA-5m98-cgcr-xx3q","summary":"n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open","modified":"2026-09-10T21:15:05.057955985Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<1.123.76"],"fixed":["1.123.76"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.38.0 <2.38.2"],"fixed":["2.38.2"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.0.0 <2.37.7"],"fixed":["2.37.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}