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Fencer Vulns
high 7.7

CVE-2026-48618 json

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

published 2026-06-26 4 mo ago modified 2026-10-25 14 d ago also BIT-node-2026-48618 , BIT-node-min-2026-48618 , EUVD-2026-39610

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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**.

Patch / fix

  • bitnami node 22.23.0, 24.17.0, 26.3.1
  • bitnami node-min 22.23.0, 24.17.0, 26.3.1
  • Red Hat Red Hat Enterprise Linux 10 1:22.23.1-2.el10_2, 1:24.18.0-1.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 1:22.23.1-2.el10_0
  • Red Hat Red Hat Enterprise Linux 8 8100020260630152626.6d880403, 8100020260703140402.6d880403
  • Red Hat Red Hat Enterprise Linux 9 9080020260626074955.rhel9, 9080020260626075442.rhel9
  • Red Hat Red Hat Hardened Images 20.20.2-1.hum1, 22.23.1-1.hum1, 24.18.0-0.1.hum1, 25.9.0-1.1.hum1, 26.4.0-1.2.hum1
  • nodejs Debian 12 18.20.4+dfsg-1~deb12u3
  • nodejs Debian 13 20.19.2+dfsg-1+deb13u3
  • nodejs Debian 14 24.17.0+dfsg+~cs24.13.2-1

debian advisories DEBIAN-CVE-2026-48618

  • npm RHEL 8 1:10.9.8-1.22.23.1.1.module+el8.10.0+24500+8eb51621
  • nodejs RHEL 8 1:22.23.1-1.module+el8.10.0+24500+8eb51621
  • nodejs-libs RHEL 8 1:22.23.1-1.module+el8.10.0+24500+8eb51621
  • nodejs-nodemon RHEL 8 3.0.1-1.module+el8.10.0+24500+8eb51621
  • nodejs-full-i18n RHEL 8 1:22.23.1-1.module+el8.10.0+24500+8eb51621
  • nodejs-packaging RHEL 8 2021.06-6.module+el8.10.0+24500+8eb51621
  • nodejs-packaging-bundler RHEL 8 2021.06-6.module+el8.10.0+24500+8eb51621
  • npm RHEL 8 1:11.16.0-1.24.18.0.1.module+el8.10.0+24481+7a71fac8

red hat advisories RHSA-2026:52399RHSA-2026:41947RHSA-2026:39868RHSA-2026:39246RHSA-2026:35891RHSA-2026:35892

  • nodejs16 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 16.20.2-150400.3.42.1
  • nodejs18 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 18.20.8-150400.9.39.1
  • nodejs20 SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 20.20.2-150500.11.30.1
  • nodejs24 SLES for SAP applications 16.0, SLES 16.0 24.18.0-160000.1.1
  • nodejs22 SLE Module for Web and Scripting 15 SP7 22.23.0-150700.3.12.1
  • nodejs24 SLE Module for Web and Scripting 15 SP7 24.17.0-150700.15.11.1
  • nodejs22 SLES for SAP applications 16.0, SLES 16.0 22.23.0-160000.1.1
  • nodejs18 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 18.20.8-8.44.1

suse advisories SUSE-SU-2026:4355-1SUSE-SU-2026:4261-1SUSE-SU-2026:4248-1SUSE-SU-2026:3930-1SUSE-SU-2026:3929-1SUSE-SU-2026:22565-1

  • bun openSUSE Tumbleweed 1.4.4-1.1
  • nodejs24 openSUSE Leap 16.0 24.18.0-160000.1.1
  • nodejs22 openSUSE Leap 16.0 22.23.0-160000.1.1
  • nodejs24 openSUSE Tumbleweed 24.17.0-1.1
  • nodejs26 openSUSE Tumbleweed 26.3.1-1.1

opensuse advisories openSUSE-SU-2026:12316-1openSUSE-SU-2026:21236-1openSUSE-SU-2026:21058-1openSUSE-SU-2026:11121-1openSUSE-SU-2026:11110-1

  • npm AlmaLinux 8 1:10.9.8-1.22.23.1.1.module_el8.10.0+4231+1bf2f855
  • nodejs AlmaLinux 8 1:22.23.1-1.module_el8.10.0+4231+1bf2f855
  • nodejs-libs AlmaLinux 8 1:22.23.1-1.module_el8.10.0+4231+1bf2f855
  • nodejs-nodemon AlmaLinux 8 3.0.1-1.module_el8.10.0+3956+47c9ee9f
  • nodejs-full-i18n AlmaLinux 8 1:22.23.1-1.module_el8.10.0+4231+1bf2f855
  • nodejs-packaging AlmaLinux 8 2021.06-6.module_el8.10.0+4158+e796f37f
  • nodejs-packaging-bundler AlmaLinux 8 2021.06-6.module_el8.10.0+4158+e796f37f
  • npm AlmaLinux 8 1:11.16.0-1.24.18.0.1.module_el8.10.0+4228+2938bc94

almalinux advisories ALSA-2026:41947ALSA-2026:39868ALSA-2026:35841ALSA-2026:35842ALSA-2026:35891ALSA-2026:35892

  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.9.0+1760+903d54b9
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1667+4a788d89
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1824+532140ee
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1823+b5789597
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1924+614dc87f
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1666+930e28e8
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1988+437f3d23
  • nodejs-nodemon Rocky Linux 8 3.0.1-1.module+el8.10.0+1989+e60144d9

rocky linux advisories RLSA-2026:41947RLSA-2026:39868RLSA-2026:35841RLSA-2026:35842RLSA-2026:35891RLSA-2026:35892

  • nodejs Alpine 3.22, Alpine 3.21 22.23.0-r0
  • nodejs Alpine 3.24, Alpine 3.23 24.17.0-r0

alpine advisories ALPINE-CVE-2026-48618

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • nodejs Azure Linux 3.0 24.17.0-1

azure linux advisories AZL-91224

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-48618 updated cvss 7.7

nodejs: Node.js: Authentication bypass due to TLS hostname handling and unicode dot separator mismatch

  • Red Hat Enterprise Linux 9 npm, nodejs, nodejs-libs, nodejs-full-i18n Red Hat Enterprise Linux 10 nodejs26 26.1.0-1.el10
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 22.23.1-1.module+el8.10.0+24500+8eb51621, nodejs 24.18.0-1.module+el8.10.0+24481+7a71fac8, nodejs-libs 22.23.1-1.module+el8.10.0+24500+8eb51621, nodejs-libs 24.18.0-1.module+el8.10.0+24481+7a71fac8, nodejs-nodemon 3.0.1-1.module+el8.10.0+24500+8eb51621, nodejs-nodemon 3.0.3-1.module+el8.10.0+24190+49a46c75, +8 more
    fixed: vendor fix RHSA-2026:41947
  • Red Hat Enterprise Linux AppStream (v. 9) nodejs 22.23.1-1.module+el9.8.0+24457+996af7aa, nodejs 24.18.0-1.module+el9.8.0+24456+b244c3b4, nodejs-libs 22.23.1-1.module+el9.8.0+24457+996af7aa, nodejs-libs 24.18.0-1.module+el9.8.0+24456+b244c3b4, nodejs-nodemon 3.0.1-1.module+el9.8.0+24156+bb41d456, nodejs-nodemon 3.0.3-3.module+el9.8.0+24355+35d95b59, +8 more
    fixed: vendor fix RHSA-2026:35892
  • Red Hat Enterprise Linux AppStream (v. 10) nodejs 22.23.1-2.el10_2, nodejs22 22.23.1-2.el10_2, nodejs24 24.18.0-1.el10_2, nodejs-libs 22.23.1-2.el10_2, nodejs24-libs 24.18.0-1.el10_2, nodejs-full-i18n 22.23.1-2.el10_2, +3 more
    fixed: vendor fix RHSA-2026:35842
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) nodejs 22.23.1-2.el10_0, nodejs22 22.23.1-2.el10_0, nodejs-libs 22.23.1-2.el10_0, nodejs-full-i18n 22.23.1-2.el10_0, nodejs-npm 10.9.8-1.22.23.1.2.el10_0
    fixed: vendor fix RHSA-2026:39246
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) nodejs 22.23.1-2.module+el9.6.0+24604+449f851b, nodejs-libs 22.23.1-2.module+el9.6.0+24604+449f851b, npm 10.9.8-1.22.23.1.2.module+el9.6.0+24604+449f851b, nodejs-nodemon 3.1.14-1.module+el9.6.0+24604+449f851b, nodejs-full-i18n 22.23.1-2.module+el9.6.0+24604+449f851b, nodejs-packaging 2021.06-4.module+el9.6.0+23473+45664c2d, +1 more
    fixed: vendor fix RHSA-2026:52399
  • Red Hat Hardened Images nodejs20 20.20.2-1.hum1, nodejs22 22.23.1-1.hum1, nodejs25 25.9.0-1.1.hum1, nodejs26 26.4.0-1.2.hum1, nodejs24 24.18.0-0.1.hum1, nodejs20-bin 20.20.2-1.hum1, +24 more
    fixed: vendor fix RHSA-2026:9455
  • Red Hat Hardened Images v8-11.3-devel 11.3.244.8-1.20.20.2.1.hum1, v8-12.4-devel 12.4.254.21-1.22.23.1.1.hum1, v8-14.1-devel 14.1.146.11-1.25.9.0.1.1.hum1, v8-14.6-devel 14.6.202.34-1.26.4.0.1.2.hum1, v8-13.6-devel 13.6.233.17-1.24.18.0.0.1.hum1
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

3.14% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.7 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CISA ADP 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
OSV 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami node
>=22.22.3, <22.23.0
>=24.16.0, <24.17.0
>=26.3.0, <26.3.1
22.23.0
24.17.0
26.3.1
bitnami node-min
>=22.22.3, <22.23.0
>=24.16.0, <24.17.0
>=26.3.0, <26.3.1
22.23.0
24.17.0
26.3.1

Affected products

  • nodejs node
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Hardened Images

Classification

Weakness
  • CWE-176 Improper Handling of Unicode Encoding
  • CWE-289 Authentication Bypass by Alternate Name
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.