# CVE-2026-48618

## Summary

- **CVE ID:** CVE-2026-48618
- **Severity:** HIGH
- **CVSS Score:** 7.7 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)
- **CWE:** CWE-176
- **Published:** Jun 26, 2026
- **Last Modified:** Aug 10, 2026

## Description

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**.

## Affected Products

- nodejs — node (22.22.3)
- nodejs — node (24.16.0)
- nodejs — node (26.3.0)

## References

- [CNA](https://nodejs.org/en/blog/vulnerability/june-2026-security-releases)
- [redhat-SADP](https://access.redhat.com/security/cve/CVE-2026-48618)
- [redhat-SADP](https://bugzilla.redhat.com/show_bug.cgi?id=2493337)
- [redhat-SADP](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48618.json)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:39246)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:35842)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:35841)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:35892)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:35891)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:9455)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:28727)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:29012)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:7378)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:30172)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:39868)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:41947)
- [redhat-SADP](https://access.redhat.com/errata/RHSA-2026:52399)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 3.23%
- **EPSS Percentile:** 87.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._