High severity8.8NVD Advisory· Published Jul 22, 2026· Updated Jul 27, 2026
CVE-2026-65591
CVE-2026-65591
Description
n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | < 1.123.64 | 1.123.64 |
n8nnpm | >= 2.30.0, < 2.30.1 | 2.30.1 |
n8nnpm | >= 2.0.0-rc.0, < 2.29.8 | 2.29.8 |
Affected products
1Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-pm35-fqvh-cq5gghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5gnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-65591ghsaADVISORY
- www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-executionnvdThird Party AdvisoryWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
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