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Fencer Vulns
medium 5.3

CVE-2026-21711 json

A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission ch…

published 2026-03-30 7 mo ago modified 2026-09-08 2 mo ago also BIT-node-2026-21711 , BIT-node-min-2026-21711 , EUVD-2026-17172

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them.

As a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary.

This vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature.

Patch / fix

  • bitnami node 25.8.2
  • bitnami node-min 25.8.2
  • nodejs node.js 25.8.2
  • nodejs24 RHEL 10.1 1:24.14.1-2.el10_1
  • nodejs24-npm RHEL 10.1 1:11.11.0-1.24.14.1.2.el10_1
  • nodejs24-libs RHEL 10.1 1:24.14.1-2.el10_1
  • nodejs24-full-i18n RHEL 10.1 1:24.14.1-2.el10_1
  • npm RHEL 8 1:11.11.0-1.24.14.1.2.module+el8.10.0+24190+49a46c75
  • nodejs RHEL 8 1:24.14.1-2.module+el8.10.0+24190+49a46c75
  • nodejs-libs RHEL 8 1:24.14.1-2.module+el8.10.0+24190+49a46c75
  • nodejs-nodemon RHEL 8 3.0.3-1.module+el8.10.0+24190+49a46c75

red hat advisories RHSA-2026:7675RHSA-2026:7670RHSA-2026:7350

  • npm AlmaLinux 8 1:11.11.0-1.24.14.1.2.module_el8.10.0+4160+4819ac42
  • nodejs AlmaLinux 8 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-libs AlmaLinux 8 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-nodemon AlmaLinux 8 3.0.3-1.module_el8.10.0+4061+f8ceeab9
  • nodejs-full-i18n AlmaLinux 8 1:24.14.1-2.module_el8.10.0+4160+4819ac42
  • nodejs-packaging AlmaLinux 8 2021.06-6.module_el8.10.0+4086+70facd4a
  • nodejs-packaging-bundler AlmaLinux 8 2021.06-6.module_el8.10.0+4086+70facd4a
  • nodejs24-npm AlmaLinux 10 1:11.11.0-1.24.14.1.2.el10_1

almalinux advisories ALSA-2026:7670ALSA-2026:7675ALSA-2026:7350

  • nodejs24 Rocky Linux 10 1:24.14.1-2.el10_1
  • nodejs-nodemon Rocky Linux 8 3.0.3-1.module+el8.10.0+2084+ab509703
  • nodejs-packaging Rocky Linux 8 2021.06-6.module+el8.10.0+40048+6d99f608
  • nodejs-nodemon Rocky Linux 9 3.0.3-3.module+el9.7.0+40025+0e0cf6b2
  • nodejs-packaging Rocky Linux 9 2021.06-6.module+el9.7.0+40052+e32ea525

rocky linux advisories RLSA-2026:7675RLSA-2026:7670RLSA-2026:7350

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-2026-21711 updated cvss 5.2

Node.js: Node.js: Unauthorized inter-process communication due to missing Unix Domain Socket permission checks

  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 24.14.1-2.module+el8.10.0+24190+49a46c75, nodejs-libs 24.14.1-2.module+el8.10.0+24190+49a46c75, nodejs-nodemon 3.0.3-1.module+el8.10.0+24190+49a46c75, npm 11.11.0-1.24.14.1.2.module+el8.10.0+24190+49a46c75, nodejs-full-i18n 24.14.1-2.module+el8.10.0+24190+49a46c75, nodejs-packaging 2021.06-6.module+el8.10.0+24190+49a46c75, +1 more
    fixed: vendor fix RHSA-2026:7670
  • Red Hat Enterprise Linux AppStream (v. 9) nodejs 24.14.1-2.module+el9.7.0+24166+51c9666b, nodejs-libs 24.14.1-2.module+el9.7.0+24166+51c9666b, nodejs-nodemon 3.0.3-3.module+el9.7.0+24166+51c9666b, npm 11.11.0-1.24.14.1.2.module+el9.7.0+24166+51c9666b, nodejs-full-i18n 24.14.1-2.module+el9.7.0+24166+51c9666b, nodejs-packaging 2021.06-6.module+el9.7.0+24166+51c9666b, +1 more
    fixed: vendor fix RHSA-2026:7350
  • Red Hat Enterprise Linux AppStream (v. 10) nodejs24 24.14.1-2.el10_1, nodejs24-libs 24.14.1-2.el10_1, nodejs24-full-i18n 24.14.1-2.el10_1, nodejs24-npm 11.11.0-1.24.14.1.2.el10_1
    fixed: vendor fix RHSA-2026:7675
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat Enterprise Linux 9 npm, nodejs, nodejs-libs, nodejs-full-i18n Red Hat Enterprise Linux 10 nodejs22
    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
7 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
OSV 3.0 5.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
bitnami node
>=25.0.0, <25.8.2
25.8.2
bitnami node-min
>=25.0.0, <25.8.2
25.8.2

Affected products

  • nodejs node

Classification

Weakness
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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.