This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-48618 →

DEBIAN-CVE-2026-48618

A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to r...

Original description

The description as published by the source.

A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismat. This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations. This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 nodejs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.20.4+dfsg-1~deb12u3"}]}]

Debian:13 nodejs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.19.2+dfsg-1+deb13u3"}]}]

Debian:14 nodejs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.17.0+dfsg+~cs24.13.2-1"}]}]

References

advisory security-tracker.debian.org