CVE-2026-48615: A flaw in Node.js proxy tunnel error handling could ex
CVE-2026-48615 analysis covering impact, affected products, versions, remediation, and cross-checked defender guidance.
CVE-2026-48615 is a vulnerability published by NVD on 6/26/2026.
What happened
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
- nodejs node.js 22.22.3
- nodejs node.js 24.16.0
- nodejs node.js 26.3.0
Severity and weakness
CVSS: HIGH 7.5. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Weaknesses: CWE-359.
Known exploitation
No CISA KEV entry is currently attached to the NVD record.
What defenders should do
- Identify whether the affected product and version range exists in production.
- Review vendor advisories and release notes before change windows.
- Patch, upgrade, disable the vulnerable component, or apply vendor mitigations.
- Verify the running version after deployment, not only the package inventory.