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CVE-2026-65591— n8n before 1.123.64 Sanitizer Bypass Remote Code Execution

Quick assessment

Affected
n8n-io n8n
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 1.123.64之前版本、2.29.8版本之前版本和2.30.1版本之前版本存在代码注入漏洞，该漏洞源于旧版表达式评估器的computed-member处理程序中存在清洗器绕过漏洞，可能导致经过身份验证的用户通过构造恶意表达式绕过清洗器，实现主机级别代码执行。

AI Predicted 8.8 Difficulty: Easy EPSS 0.48% · P41

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n-io n8n < 1.123.64 affected
1.123.64 unaffected
< 2.30.1 affected
2.30.1 unaffected
< 2.29.8 affected
2.29.8 unaffected
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I. Basic Information for CVE-2026-65591

Vulnerability Information
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Vulnerability Title
n8n before 1.123.64 Sanitizer Bypass Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
表达式语言语句中使用的特殊元素转义处理不恰当(表达式语言注入)
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 1.123.64之前版本、2.29.8版本之前版本和2.30.1版本之前版本存在代码注入漏洞，该漏洞源于旧版表达式评估器的computed-member处理程序中存在清洗器绕过漏洞，可能导致经过身份验证的用户通过构造恶意表达式绕过清洗器，实现主机级别代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 0 ~ 1.123.64 -
n8n-io n8n 0 ~ 2.30.1 -
n8n-io n8n 0 ~ 2.29.8 -

II. Public POCs for CVE-2026-65591

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III. Intelligence Information for CVE-2026-65591

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Vendor Advisories for CVE-2026-65591 (2)

Same Patch Batch · n8n-io · 2026-07-22 · 14 CVEs total

CVE-2026-65595 8.9 HIGH n8n before 2.29.8 and 2.30.1 Privilege Escalation via Token Exchange
CVE-2026-65016 7.7 HIGH n8n before 1.123.64, 2.29.8, and 2.30.1 Privilege Escalation via SSO Instance-Role
CVE-2026-65593 6.3 MEDIUM n8n before 1.123.64, 2.29.8, and 2.30.1 SSRF via Dynamic Node Parameters
CVE-2026-65599 5.1 MEDIUM n8n before 1.123.64, 2.29.8, and 2.30.1 Credential Exposure via JWT Header
CVE-2026-65589 5.1 MEDIUM n8n before 1.123.64 Credential Exposure via LLM Node Execution Data
CVE-2026-65594 5.1 MEDIUM n8n before 2.30.1 Missing OAuth Authorization Check
CVE-2026-65597 n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe
CVE-2026-65590 n8n before 2.30.1 Shell Sandbox Bypass on Linux Windows
CVE-2026-65592 n8n before 1.123.64 Stored DOM XSS via cachedResultUrl
CVE-2026-65015 n8n before 2.30.1 Privilege Escalation via run_node_tool
CVE-2026-65596 n8n before 1.123.64 Credential Exfiltration via GraphQL Node
CVE-2026-65014 n8n before 2.28.0 Authentication Bypass via test-webhook
CVE-2026-65598 n8n before 1.123.64 Remote Code Execution via Git Clone

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-917

V. Comments for CVE-2026-65591

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