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CVE-2025-68949— n8n has a Webhook Node IP Whitelist Bypass via Partial String Matching

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开源的一个可扩展的工作流自动化工具。 n8n 1.36.0版本至2.2.0之前版本存在访问控制错误漏洞，该漏洞源于Webhook节点的IP白名单验证执行部分字符串匹配而非精确IP比较，可能导致安全绕过。

CVSS 5.3 · Medium EPSS 0.30% · P23

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-68949

Vulnerability Information
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Vulnerability Title
n8n has a Webhook Node IP Whitelist Bypass via Partial String Matching
Source: CVE Program / CVE List V5
Vulnerability Description
n8n is an open source workflow automation platform. From 1.36.0 to before 2.2.0, the Webhook node’s IP whitelist validation performed partial string matching instead of exact IP comparison. As a result, an incoming request could be accepted if the source IP address merely contained the configured whitelist entry as a substring. This issue affected instances where workflow editors relied on IP-based access controls to restrict webhook access. Both IPv4 and IPv6 addresses were impacted. An attacker with a non-whitelisted IP could bypass restrictions if their IP shared a partial prefix with a trusted address, undermining the intended security boundary. This vulnerability is fixed in 2.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.36.0版本至2.2.0之前版本存在访问控制错误漏洞，该漏洞源于Webhook节点的IP白名单验证执行部分字符串匹配而非精确IP比较，可能导致安全绕过。
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 >= 1.36.0, < 2.2.0 -

II. Public POCs for CVE-2025-68949

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III. Intelligence Information for CVE-2025-68949

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IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-134