{"schema":"threatline.record/2","record":{"id":"CVE-2026-103245","aliases":["GHSA-hwv9-jhc7-f7c4"],"summary":"n8n before 1.123.80, 2.39.6, and 2.40.1 Missing Webhook Signature Verification","details":"n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 fail to verify the x-webflow-signature HMAC in the Webflow Trigger node webhook handler. Unauthenticated attackers can send forged webhook requests with attacker-controlled payloads to trigger workflows and manipulate downstream actions like record creation or API calls.","categories":["Frameworks"],"product":"n8n","vendor":"n8n-io","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103245","source_modified_at":"2026-10-01T15:02:26.087Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"n8n","vendor":"n8n-io","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"1.123.80"},{"version":"2.0.0","status":"affected","versionType":"semver","lessThan":"2.39.6"},{"version":"2.40.0","status":"affected","versionType":"semver","lessThan":"2.40.1"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103245","source_modified_at":"2026-10-01T15:02:26.087Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"n8n","ecosystem":null},"version":"1.123.80","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103245","source_modified_at":"2026-10-01T15:02:26.087Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"n8n","ecosystem":null},"version":"2.39.6","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103245","source_modified_at":"2026-10-01T15:02:26.087Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"n8n","ecosystem":null},"version":"2.40.1","basis":"first unaffected version stated in the CVE record"}],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00157,"percentile":0.04435,"score_date":"2026-10-23"},"published_at":"2026-10-01T10:41:52.707Z","modified_at":"2026-10-01T15:02:26.087Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-103245","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-01T15:02:26.087Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103245","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-hwv9-jhc7-f7c4","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-missing-webhook-signature-verification","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-01T15:02:18.003977Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-01T15:02:26.087Z","content_hash":"dd6d527646a347f2caf30f1021307e08ccf83a621fb53af3cf1a3c8cb052fa1e"}}