5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-68949

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

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.

(GitHub Advisory)

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CVE-2025-68949

CVE-2025-68949:

5.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
n8n	npm	>= 1.36.0, < 2.2.0	2.2.0

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability lies in the isIpWhitelisted function within packages/nodes-base/nodes/Webhook/utils.ts. The function was responsible for checking if an incoming request's IP address was on the configured whitelist for the Webhook node. The core of the vulnerability was the use of String.prototype.includes() to perform this check. This method of comparison is flawed for IP validation as it allows for partial matches. For instance, if a user whitelisted the IP 10.0.0.1, an attacker with the IP 10.0.0.19 would be granted access because the string '10.0.0.1' is included in '10.0.0.19'. The patch rectifies this by replacing the string comparison with the BlockList class from Node.js's net module. This class is designed to handle IP addresses and CIDR blocks correctly, ensuring a strict and accurate comparison, thus preventing the bypass.

Vulnerable functions

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WAF Rule

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Reasoning

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