Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') Affecting n8n package, versions <1.123.64>=2.0.0-rc.0 <2.29.8>=2.30.0 <2.30.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-N8N-18322066
- published27 Jul 2026
- disclosed22 Jul 2026
- creditJunming Wu
Introduced: 22 Jul 2026
NewCVE-2026-65591 (opens in a new tab)How to fix?
Upgrade n8n to version 1.123.64, 2.29.8, 2.30.1 or higher.
Overview
n8n is a n8n Workflow Automation Tool
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') via the legacy expression evaluator's computed-member sanitizer. An attacker can achieve host-level code execution by bypassing input sanitization as an authenticated user with workflow create or modify permissions.
Note: This is only exploitable if the legacy expression engine is enabled as the default engine.
Workaround
This vulnerability can be mitigated by restricting instance access to fully trusted users only or switching to the non-legacy expression engine by setting N8N_EXPRESSION_ENGINE=vm.