Description
A flaw in Node.js proxy tunnel error handling could expose proxy credentials in `ERR_PROXY_TUNNEL` error messages. When proxy credentials are embedded in the proxy URL, they may be exposed through error handling paths and captured by logs, diagnostics, or other error consumers. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
CVSS breakdown
CVSS 3.0
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- nodejs / node22.22.3 – 22.22.3
- nodejs / node24.16.0 – 24.16.0
- nodejs / node26.3.0 – 26.3.0
- nodejs / node.js22.22.3 – 22.22.3
- nodejs / node.js24.16.0 – 24.16.0
- nodejs / node.js26.3.0 – 26.3.0
Updated 4m ago · 8 sources