CVE-2026-21711

Name	CVE-2026-21711
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nodejs (PTS)	bullseye	12.22.12~dfsg-1~deb11u4	fixed
	bullseye (security)	12.22.12~dfsg-1~deb11u7	fixed
	bookworm, bookworm (security)	18.20.4+dfsg-1~deb12u1	fixed
	trixie	20.19.2+dfsg-1	fixed
	trixie (security)	20.19.2+dfsg-1+deb13u2	fixed
	forky	22.22.2+dfsg+~cs22.19.15-1	fixed
	sid	22.22.2+dfsg+~cs22.19.15-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
nodejs	source	(unstable)	(not affected)

Notes

- nodejs <not-affected> (Vulnerable code not present)
https://nodejs.org/en/blog/vulnerability/march-2026-security-releases#nodejs-permission-model-bypass-uds-server-bindlisten-works-without---allow-net-cve-2026-21711---medium