CVE-2026-48928: A inconsistency in Node.js hostname matching can cause
CVE-2026-48928 analysis covering impact, affected products, versions, remediation, and cross-checked defender guidance.
CVE-2026-48928 is a vulnerability published by NVD on 6/26/2026.
What happened
A inconsistency in Node.js hostname matching can cause a trust-policy bypass in multi-context mTLS setups.
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: MEDIUM 5.4. Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
Weaknesses: CWE-284.
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.