CVE-2026-48615: Node.js

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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

• Node.js Node.js: version 22.22.3 only; version 24.16.0 only; version 26.3.0 only

Published 2026-06-26. Last modified 2026-06-26.