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5.9 Medium

CVE-2026-48615 A flaw in Node.js proxy tunnel error handling could expose proxy credentials in `ERR_PROXY_TUNNEL` error messages

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**.

Affected products and versions

Product Affected versions Fixed in
Node 26.3.0 No fix stated
Node 24.16.0 No fix stated
Node 22.22.3 No fix stated

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