NixOS is a Linux distribution built on top of the Nix package manager. It is completely declarative, its system configurations are reproducible, makes configuration changes reliable and atomic, and eliminates configuration drift.

NixOS

Firefox is a free and open-source web browser developed by the Mozilla Foundation.

Mozilla Firefox

Mozilla Thunderbird is a free, open-source, cross-platform application for managing email, news feeds, chat, and newsgroups.

Mozilla Thunderbird

Firefox is a free and open-source web browser developed by the Mozilla Foundation. Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations that need to set up and maintain Firefox on a large scale. It does not come with the latest features, but it has the latest security and stability fixes.

Mozilla Firefox ESR

AlmaLinux OS is an open-source, community-driven Linux operating system that fills the gap left by the discontinuation of the CentOS Linux stable release. AlmaLinux OS is a 1:1 binary compatible fork of RHEL®, guided and built by the community.

Alma Linux

Wolfi is a community Linux OS designed for the container and cloud-native era; it is a Linux distribution based on Alpine.

Wolfi

Chainguard is a Linux distribution based on Alpine. It's the commercial version of the Wolfi distro.

Chainguard

Homebrew is a free and open-source software package management system that simplifies the installation of software on Apple's macOS operating system and Linux. The name is intended to suggest the idea of building software on the Mac depending on the user's taste. Originally written by Max Howell, the package manager has gained popularity in the Ruby on Rails community and earned praise for its extensibility.

Homebrew

Debian GNU/Linux is a Linux distribution composed of free and open-source software.

Linux Debian

Ubuntu is a Linux distribution based on Debian, mostly composed of free and open-source software. Ubuntu is officially released in three editions: Desktop, Server, and Core for internet of things devices and robots. All the editions can run on the computer alone or in a virtual machine.

Linux Ubuntu

Red Hat Enterprise Linux is a Linux distribution developed by Red Hat for the commercial market.

Linux Red Hat

Linux openSUSE

Oracle Linux is a Linux distribution packaged and freely distributed by Oracle, available partially under the GNU General Public License since late 2006. It is compiled from Red Hat Enterprise Linux source code, replacing Red Hat branding with Oracle's.

Linux Oracle

Echo is a secure, minimal Linux OS built vulnerability-free. It is fully compatible across environments and continuously patched - making it a clean, dependable base layer for modern applications. Echo is used by organizations focused on security and reliability, including those with compliance or FIPS requirements.

Echo

Undefined behavior in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.

CVE ID	Severity	Score	Technologies	Component name	CISA KEV exploit	Has fix	Published date
CVE-2026-30892	HIGH	7.8	NixOS	crun	No	Yes	Mar 26, 2026
CVE-2026-33223	MEDIUM	5.4	NixOS	nats-fips	No	Yes	Mar 25, 2026
CVE-2026-33222	MEDIUM	4.9	NixOS	nats-fips	No	Yes	Mar 25, 2026
CVE-2026-33249	MEDIUM	4.3	NixOS	k3s-1.32	No	Yes	Mar 25, 2026
CVE-2026-33248	MEDIUM	4.2	NixOS	github.com/nats-io/nats-server/v2	No	Yes	Mar 25, 2026

CVE-2026-4718:
NixOS vulnerability analysis and mitigation

8.1

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CVE-2026-4718: NixOS vulnerability analysis and mitigation