CVE-2026-65591

published 2026-07-22

CVE-2026-65591: n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or…

Priority P3 58 high 8.8 CVSS 3.1

AV N AC L PR L UI N S U C H I H A H

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

9 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 1.123.64	1.123.64
n8n-io	n8n	< 2.30.1	2.30.1
n8n-io	n8n	< 2.29.8	2.29.8
n8n	n8n	< 1.123.64	1.123.64
n8n	n8n	—	—
n8n	n8n	>= 0 < 1.123.64	1.123.64
n8n	n8n	>= 2.0.0 < 2.29.8	2.29.8
n8n	n8n	>= 2.0.0-rc.0 < 2.29.8	2.29.8
n8n	n8n	>= 2.30.0 < 2.30.1	2.30.1

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v4.0 8.9 HIGH 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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CWE-917