CVE catalog

CVE-2026-21636

nodejs: CVE-2026-21636

Severity: Medium · CVSS 5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Published: Jan 13, 2026, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.87% · Oct 25, 2026

A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution. * The issue affects users of the Node.js permission model on version v25. In the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nodejs	sid	`24.22.1+dfsg+~cs24.19.2-1`	not affected
Debian	nodejs	forky	`24.21.0+dfsg+~cs24.13.4-1`	not affected
Debian	nodejs	trixie	`20.19.2+dfsg-1+deb13u2`	not affected
Debian	nodejs	trixie-security	`20.19.2+dfsg-1+deb13u3`	not affected
Debian	nodejs	bookworm	`18.20.4+dfsg-1~deb12u2`	not affected
Debian	nodejs	bookworm-security	`18.20.4+dfsg-1~deb12u3`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nodejs	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	nodejs	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libnode108]Not affected
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[libnode-dev]Not affected
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[nodejs]Not affected
Details (4)
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
[nodejs-doc]Not affected
Source package: [nodejs]
Details (4)
- 18.20.4+dfsg-1~deb12u2 · all · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm
- 18.20.4+dfsg-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · nodejs · debian · bookworm

Observed: Oct 27, 2026, 10:06:26 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Red Hat security advisories and VEX]