CVE-2026-48618
CVE-2026-48618
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 · EPSS 3.2% · Fix available
- Published
- Updated
Affected products and versions
node.js
- Versions
- ≥ 22.22.3, ≤ 22.22.3: Affected (semver)
- ≥ 24.16.0, ≤ 24.16.0: Affected (semver)
- ≥ 26.3.0, ≤ 26.3.0: Affected (semver)
No fix published
nodejs Debian:12
- Versions
- 18.13.0+dfsg1-1
- 18.13.0+dfsg1-1.1
- 18.19.0+dfsg-1
- 18.19.0+dfsg-2
- 18.19.0+dfsg-3
- 18.19.0+dfsg-4
- 18.19.0+dfsg-5
- 18.19.0+dfsg-6
- 18.19.0+dfsg-6~deb12u1
- 18.19.0+dfsg-6~deb12u2
- 18.19.1+dfsg-1
- 18.19.1+dfsg-2
- 18.19.1+dfsg-3
- 18.19.1+dfsg-3.1
- 18.19.1+dfsg-4
- 18.19.1+dfsg-6
- 18.20.1+dfsg-1
- 18.20.1+dfsg-2
- 18.20.1+dfsg-3
- 18.20.1+dfsg-4
- 18.20.4+dfsg-1~deb12u1
- 18.20.4+dfsg-1~deb12u2
- Affected ranges
- ECOSYSTEM: < 18.20.4+dfsg-1~deb12u3
Update to 18.20.4+dfsg-1~deb12u3
nodejs Debian:13
- Versions
- 20.19.2+dfsg-1
- 20.19.2+dfsg-1+deb13u1
- 20.19.2+dfsg-1+deb13u2
- Affected ranges
- ECOSYSTEM: < 20.19.2+dfsg-1+deb13u3
Update to 20.19.2+dfsg-1+deb13u3
nodejs Debian:14
- Versions
- 20.19.2+dfsg-1
- 20.19.4+dfsg-1
- 20.19.5+dfsg+~cs20.19.12-1
- 20.19.5+dfsg+~cs20.19.12-2
- 20.19.5+dfsg+~cs20.19.12-3
- 20.19.5+dfsg+~cs20.19.12-4
- 20.19.5+dfsg+~cs20.19.24-1
- 22.12.0+dfsg-1
- 22.12.0+dfsg-2
- 22.12.0+dfsg-3
- 22.14.0+dfsg-1
- 22.18.0+dfsg+~cs22.17.2-1
- 22.18.0+dfsg+~cs22.17.2-2
- 22.18.0+dfsg-1
- 22.19.0+dfsg+~cs22.18.0-1
- 22.21.1+dfsg+~cs22.19.0-1
- 22.21.1+dfsg+~cs22.19.0-2
- 22.21.1+dfsg+~cs22.19.0-3
- 22.21.1+dfsg+~cs22.19.0-4
- 22.21.1+dfsg+~cs22.19.0-5
- 22.21.1+dfsg+~cs22.19.0-6
- 22.22.0+dfsg+~cs22.19.13-1
- 22.22.0+dfsg+~cs22.19.13-2
- 22.22.0+dfsg+~cs22.19.6-1
- 22.22.1+dfsg+~cs22.19.15-1
- 22.22.2+dfsg+~cs22.19.15-1
- 22.22.2+dfsg+~cs22.19.15-3
- 24.11.1+dfsg+~cs24.10.1-1
- 24.11.1+dfsg+~cs24.10.1-2
- 24.12.0+dfsg+~cs24.10.4-1
- 24.13.0+dfsg+~cs24.10.7-1
- 24.13.0+dfsg+~cs24.10.7-2
- 24.14.0+dfsg+~cs24.12.0-1
- 24.14.0+dfsg+~cs24.12.0-2
- 24.14.1+dfsg+~cs24.12.0-1
- 24.15.0+dfsg+~cs24.12.2-1
- 24.16.0+dfsg+~cs24.13.1-1
- 24.16.0+dfsg+~cs24.13.1-2
- Affected ranges
- ECOSYSTEM: < 24.17.0+dfsg+~cs24.13.2-1
Update to 24.17.0+dfsg+~cs24.13.2-1
nodejs Ubuntu:Pro:14.04:LTS
- Versions
- 0.10.15~dfsg1-4
- 0.10.21~dfsg1-1
- 0.10.22~dfsg1-2
- 0.10.23~dfsg1-1
- 0.10.23~dfsg1-2
- 0.10.23~dfsg1-3
- 0.10.24~dfsg1-1
- 0.10.25~dfsg2-2
- 0.10.25~dfsg2-2ubuntu1
- 0.10.25~dfsg2-2ubuntu1.2
- 0.10.25~dfsg2-2ubuntu1.2+esm1
- 0.10.25~dfsg2-2ubuntu1.2+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:Pro:16.04:LTS
- Versions
- 0.10.25~dfsg2-2ubuntu1
- 4.2.2~dfsg-1
- 4.2.3~dfsg-1
- 4.2.4~dfsg-1ubuntu1
- 4.2.4~dfsg-2
- 4.2.6~dfsg-1ubuntu1
- 4.2.6~dfsg-1ubuntu4
- 4.2.6~dfsg-1ubuntu4.1
- 4.2.6~dfsg-1ubuntu4.2
- 4.2.6~dfsg-1ubuntu4.2+esm1
- 4.2.6~dfsg-1ubuntu4.2+esm2
- 4.2.6~dfsg-1ubuntu4.2+esm3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:Pro:18.04:LTS
- Versions
- 6.11.4~dfsg-1ubuntu1
- 6.11.4~dfsg-1ubuntu2
- 6.12.0~dfsg-1ubuntu1
- 6.12.0~dfsg-2ubuntu1
- 6.12.0~dfsg-2ubuntu2
- 8.10.0~dfsg-2
- 8.10.0~dfsg-2ubuntu0.2
- 8.10.0~dfsg-2ubuntu0.3
- 8.10.0~dfsg-2ubuntu0.4
- 8.10.0~dfsg-2ubuntu0.4+esm1
- 8.10.0~dfsg-2ubuntu0.4+esm2
- 8.10.0~dfsg-2ubuntu0.4+esm3
- 8.10.0~dfsg-2ubuntu0.4+esm4
- 8.10.0~dfsg-2ubuntu0.4+esm5
- 8.10.0~dfsg-2ubuntu0.4+esm6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:Pro:20.04:LTS
- Versions
- 10.15.2~dfsg-2ubuntu1
- 10.17.0~dfsg-2ubuntu4
- 10.17.0~dfsg-2ubuntu6
- 10.19.0~dfsg-3ubuntu1
- 10.19.0~dfsg-3ubuntu1.1
- 10.19.0~dfsg-3ubuntu1.2
- 10.19.0~dfsg-3ubuntu1.3
- 10.19.0~dfsg-3ubuntu1.5
- 10.19.0~dfsg-3ubuntu1.6
- 10.19.0~dfsg-3ubuntu1.6+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:Pro:22.04:LTS
- Versions
- 12.22.5~dfsg-5ubuntu1
- 12.22.7~dfsg-2ubuntu1
- 12.22.7~dfsg-2ubuntu3
- 12.22.9~dfsg-1ubuntu2
- 12.22.9~dfsg-1ubuntu3
- 12.22.9~dfsg-1ubuntu3.1
- 12.22.9~dfsg-1ubuntu3.2
- 12.22.9~dfsg-1ubuntu3.3
- 12.22.9~dfsg-1ubuntu3.4
- 12.22.9~dfsg-1ubuntu3.5
- 12.22.9~dfsg-1ubuntu3.6
- 12.22.9~dfsg-1ubuntu3.6+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:24.04:LTS
- Versions
- 18.13.0+dfsg1-1ubuntu2
- 18.19.1+dfsg-2ubuntu4
- 18.19.1+dfsg-6ubuntu1
- 18.19.1+dfsg-6ubuntu2
- 18.19.1+dfsg-6ubuntu5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:25.10
- Versions
- 20.18.1+dfsg-1ubuntu2
- 20.19.2+dfsg-1
- 20.19.4+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:26.10
- Versions
- 22.22.1+dfsg+~cs22.19.15-1ubuntu1
- 24.16.0+dfsg+~cs24.13.1-2ubuntu1
- 24.18.0+dfsg+~cs24.13.2-1ubuntu1
- 24.19.0+dfsg+~cs24.13.3-1ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nodejs Ubuntu:26.04:LTS
- Versions
- 20.19.4+dfsg-1
- 20.19.5+dfsg+~cs20.19.12-4
- 22.21.1+dfsg+~cs22.19.0-6ubuntu4
- 22.22.0+dfsg+~cs22.19.6-1ubuntu2
- 22.22.0+dfsg+~cs22.19.13-2ubuntu1
- 22.22.1+dfsg+~cs22.19.15-1ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://nodejs.org/en/blog/vulnerability/june-2026-security-releases
- 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
- https://access.redhat.com/errata/RHSA-2026:39246
- https://access.redhat.com/errata/RHSA-2026:35842
- https://access.redhat.com/errata/RHSA-2026:35841
- https://access.redhat.com/errata/RHSA-2026:41947
- https://access.redhat.com/errata/RHSA-2026:39868
- https://access.redhat.com/errata/RHSA-2026:52399
- https://access.redhat.com/errata/RHSA-2026:35892
- https://access.redhat.com/errata/RHSA-2026:35891
- https://access.redhat.com/errata/RHSA-2026:9455
- https://access.redhat.com/errata/RHSA-2026:28727
- https://access.redhat.com/errata/RHSA-2026:29012
- https://access.redhat.com/errata/RHSA-2026:7378
- https://access.redhat.com/errata/RHSA-2026:30172
- https://nvd.nist.gov/vuln/detail/CVE-2026-48618