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CVE-2026-85172— n8n before 2.34.1 SSRF via Request Helper URI Validation Bypass

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 在 2.34.1 之前的版本中存在一个服务端请求伪造（SSRF）漏洞，该漏洞位于暴露给 Code 节点和 Function 节点的旧版请求辅助函数中。其验证逻辑仅检查 属性以进行 SSRF 安全校验，而底层的 HTTP 客户端在 和 属性同时存在时会优先使用 属性。攻击者可以利用这一点，通过提供一个安全的 和一个恶意的 来绕过验证逻辑，从而访问内部网络地址。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
n8n-io n8n < 2.34.1 affected
2.34.1 unaffected
< 2.33.4 affected
2.33.4 unaffected
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I. Basic Information for CVE-2026-85172

Vulnerability Information
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Vulnerability Title
n8n before 2.34.1 SSRF via Request Helper URI Validation Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
n8n versions before 2.34.1 contain a server-side request forgery vulnerability in the legacy request helper function exposed to Code and Function nodes. The validation logic checks the uri property for SSRF safety while the underlying HTTP client uses the url property when both are present, allowing attackers to bypass validation by supplying a safe uri alongside a malicious url to access internal addresses.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 0 ~ 2.34.1 -
n8n-io n8n 0 ~ 2.33.4 -

II. Public POCs for CVE-2026-85172

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III. Intelligence Information for CVE-2026-85172

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Vendor Advisories for CVE-2026-85172 (2)

Same Patch Batch · n8n-io · 2026-09-03 · 9 CVEs total

CVE-2026-85169 8.7 HIGH n8n before 1.123.73 Remote Code Execution via $fromAI Prototype Leak
CVE-2026-85168 7.7 HIGH n8n before 1.123.73 Remote Code Execution via Git Node
CVE-2026-85165 7.2 HIGH n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement
CVE-2026-85166 7.2 HIGH n8n before 2.36.2 Credential Exfiltration via Workflow Tool Node
CVE-2026-85171 7.1 HIGH n8n before 1.123.73 Credential Exposure via Error Logging
CVE-2026-85170 7.1 HIGH n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodes
CVE-2026-85167 6.3 MEDIUM n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodes
CVE-2026-85173 5.3 MEDIUM n8n before 2.36.2 Missing Authorization via Insights API

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-918

V. Comments for CVE-2026-85172

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