{"id":"CVE-2026-118679","aliases":[],"cve":{"records":[{"id":"CVE-2026-118679","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-28T17:28:46.441Z","published":"2026-10-28T18:59:51.136Z","modified":"2026-10-28T18:59:51.136Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-28T18:59:51.136Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-3c3p-5959-3ghr","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-slack-token-exfiltration-via-slack-trigger","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-918","description":"Server-Side Request Forgery (SSRF)","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionEndExcluding":"1.123.83"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionStartIncluding":"2.42.0","versionEndExcluding":"2.42.1"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.41.4"}]}]}]}],"prioritization":[]},"title":"n8n before 1.123.83, 2.41.4, and 2.42.1 Slack Token Exfiltration via Slack Trigger","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n before 1.123.83, 2.41.4, and 2.42.1 contains a server-side request forgery vulnerability in the Slack Trigger webhook that allows unauthenticated attackers to exfiltrate Slack tokens by bypassing signature verification when no signing secret is set. Attackers who know the webhook URL can name a file to download, causing the node to send the workspace access token to an attacker host and return the response.","score":7.5,"severity":"high","published":"2026-10-28T18:59:51.136Z","modified":"2026-10-28T18:59:51.136Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.123.83","versionType":"semver"},{"version":"1.123.83","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-118679"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.42.0","status":"affected","lessThan":"2.42.1","versionType":"semver"},{"version":"2.42.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-118679"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.0.0","status":"affected","lessThan":"2.41.4","versionType":"semver"},{"version":"2.41.4","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-118679"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-3c3p-5959-3ghr","https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-slack-token-exfiltration-via-slack-trigger"],"sources":[{"name":"CVE","id":"CVE-2026-118679","modified":"2026-10-28T18:59:51.136Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118679"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N","score":6.9},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:37:36.893Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:15:35.655Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"n8n versions before 1.123.83, 2.41.4, and 2.42.1 contain a server-side request forgery vulnerability in the Slack Trigger webhook, allowing unauthenticated attackers to exfiltrate Slack tokens. Attackers who know the webhook URL can exploit this. The vulnerability occurs when no signing secret is set.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:54:50.598Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-118679"}]}}