# CVE-2026-65591

## Summary

- **CVE ID:** CVE-2026-65591
- **Severity:** HIGH
- **CVSS Score:** 8.9 (CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L)
- **CWE:** CWE-917
- **Published:** Jul 22, 2026
- **Last Modified:** Jul 24, 2026

## 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 Products

- n8n-io — n8n (0)
- n8n-io — n8n (1.123.64)
- n8n-io — n8n (2.30.1)
- n8n-io — n8n (2.29.8)

## References

- [CNA](https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g)
- [CNA](https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.48%
- **EPSS Percentile:** 40.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._