--- title: "CVE-2026-86083: n8n - Server-Side Template Injection" description: "n8n < 1.123.76, 2.37.7, 2.38.2 contains a server-side template injection caused by mutable global JSON.stringify usage in legacy expression engine, letting attackers execute arbitrary code, exploit requires expression injection." url: https://panop.io/threat-heartbeat/CVE-2026-86083/ --- # CVE-2026-86083 n8n - Server-Side Template Injection n8n < 1.123.76, 2.37.7, 2.38.2 contains a server-side template injection caused by mutable global JSON.stringify usage in legacy expression engine, letting attackers execute arbitrary code, exploit requires expression injection. CVSS base score 8.8 /10 High CISA KEV Not listed Public exploit None known Authentication Required EPSS 0.66% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-86083) ## Details Type Server-Side Template Injection Impact Remote Code Execution CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Published 8 September 2026 Updated 15 October 2026 Weakness [CWE-94](https://cwe.mitre.org/data/definitions/94.html) ## Vendor fix Update to versions 1.123.76, 2.37.7, or 2.38.2 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-2026-86083](https://nvd.nist.gov/vuln/detail/CVE-2026-86083) - [https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76](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@2.37.7) - [https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2](https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2) - [https://github.com/n8n-io/n8n/security/advisories/GHSA-6xcw-7xm6-48c6](https://github.com/n8n-io/n8n/security/advisories/GHSA-6xcw-7xm6-48c6) [← 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)