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n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution

🗓️ 22 Jul 2026 22:02:04Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 2 Views

Impact The legacy expression evaluator's computed-member sanitizer can be bypassed by an authenticated user with workflow create or modify permissions. Successful exploitation grants the attacker host-level code execution as the n8n process. The l...

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-65591
22 Jul 202611:21
–attackerkb
Circl		CVE-2026-65591
22 Jul 202612:41
–circl
CVE		CVE-2026-65591
22 Jul 202611:21
–cve
Cvelist		CVE-2026-65591 n8n before 1.123.64 Sanitizer Bypass Remote Code Execution
22 Jul 202611:21
–cvelist
EUVD		EUVD-2026-47635
22 Jul 202611:21
–euvd
Github Security Blog		Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution
22 Jul 202612:32
–github
NVD		CVE-2026-65591
22 Jul 202612:18
–nvd
OSV		GHSA-M7JC-P4HF-XHWQ Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution
22 Jul 202612:32
–osv
OSV		GHSA-PM35-FQVH-CQ5G n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution
22 Jul 202622:02
–osv
Patchstack		NPM: n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution
22 Jul 202622:02
–patchstack
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Vulners
Node
OR
n8nn8nRange2.0.0-rc.0–2.29.8npm
n8nn8nRange2.30.0–2.30.1npm
n8nn8nRange<1.123.64npm

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22 Jul 2026 22:02Current
6Medium risk
Vulners AI Score6
CVSS 48.9
SSVC
CWE-917
2