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CVE-2026-65591

nvd nist
Published: Jul 22, 2026Modified: Jul 27, 2026

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8.9
Vector
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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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:XShow less
Source: disclosure@vulncheck.com (Secondary)

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 (6)

Products: N8n: N8n
N8n
1 product
N8n
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
N8n
N8n
Before 1.123.64
N8n
From 2.0.0 to 2.29.8
N8n
Before 1.123.64
N8n
From 2.0.0 to 2.29.8
N8n
Version 2.30.0
N8n
Version 2.30.0

Related CWEs

CWE-917
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

References (2)

Source: disclosure@vulncheck.com
MitigationVendor Advisory
Source: disclosure@vulncheck.com
Third Party Advisory

Timeline

No history available yet.