--- title: "CVE-2026-118679: n8n - Server Side Request Forgery" description: "n8n < 1.123.83, 2.41.4, and 2.42.1 contains a server-side request forgery caused by bypassing signature verification in Slack Trigger webhook when no signing secret is set, letting unauthenticated attackers exfiltrate Slack tokens by naming a file to download." url: https://panop.io/threat-heartbeat/CVE-2026-118679/ --- # CVE-2026-118679 n8n - Server Side Request Forgery n8n < 1.123.83, 2.41.4, and 2.42.1 contains a server-side request forgery caused by bypassing signature verification in Slack Trigger webhook when no signing secret is set, letting unauthenticated attackers exfiltrate Slack tokens by naming a file to download. CVSS base score 7.5 /10 High CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-118679) ## Details Type Server Side Request Forgery Impact Information Disclosure, Server Side Request Forgery CVSS vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N Published 28 October 2026 Updated 29 October 2026 Weakness [CWE-918](https://cwe.mitre.org/data/definitions/918.html) ## Vendor fix Update to version 1.123.83, 2.41.4, 2.42.1 or later. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-118679](https://nvd.nist.gov/vuln/detail/CVE-2026-118679) - [https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-slack-token-exfiltration-via-slack-trigger](https://www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-slack-token-exfiltration-via-slack-trigger) - [https://github.com/n8n-io/n8n/security/advisories/GHSA-3c3p-5959-3ghr](https://github.com/n8n-io/n8n/security/advisories/GHSA-3c3p-5959-3ghr) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)