CVE-2026-48618A 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 misma…
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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**.
- CVSS
- 7.7 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-176, CWE-289
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- hackerone
- NVD analysis
- Modified
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nodejs node nodejs:node (from the name) | from 22.22.3 through 22.22.3; from 24.16.0 through 24.16.0; from 26.3.0 through 26.3.0 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 1:24.18.0-1.el10_2 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 1:22.23.1-2.el10_0 not affected | CISA ADP |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 22.23.1-1.hum1 not affected | CISA ADP |
nodejs node.js nodejs:node.js | 22.22.3; 24.16.0; 26.3.0 | NVD |
References
- https://nodejs.org/en/blog/vulnerability/june-2026-security-releasespatch, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:28727
- https://access.redhat.com/errata/RHSA-2026:29012
- https://access.redhat.com/errata/RHSA-2026:30172
- https://access.redhat.com/errata/RHSA-2026:35841
- https://access.redhat.com/errata/RHSA-2026:35842
- https://access.redhat.com/errata/RHSA-2026:35891
- https://access.redhat.com/errata/RHSA-2026:35892
- https://access.redhat.com/errata/RHSA-2026:39246
- https://access.redhat.com/errata/RHSA-2026:39868
- https://access.redhat.com/errata/RHSA-2026:41947
- https://access.redhat.com/errata/RHSA-2026:52399
- https://access.redhat.com/errata/RHSA-2026:7378
- https://access.redhat.com/errata/RHSA-2026:9455
- https://access.redhat.com/security/cve/CVE-2026-48618
- https://bugzilla.redhat.com/show_bug.cgi?id=2493337
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48618.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.