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

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

Mozilla Thunderbird

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

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

Spoofing issue in Thunderbird. This vulnerability affects Thunderbird < 149 and Thunderbird < 140.9.

CVE ID	Severity	Score	Technologies	Component name	CISA KEV exploit	Has fix	Published date
CVE-2026-4370	CRITICAL	10	NixOS	juju	No	Yes	Apr 01, 2026
CVE-2026-34235	MEDIUM	6.9	NixOS	pjsip	No	Yes	Mar 31, 2026
CVE-2026-34730	MEDIUM	5.5	Python	copier	No	Yes	Apr 02, 2026
CVE-2026-32113	MEDIUM	5.1	NixOS	cpe:2.3:a:discourse:discourse	No	Yes	Mar 31, 2026
CVE-2026-34726	MEDIUM	4.4	Python	copier	No	Yes	Apr 02, 2026

CVE-2026-3889:
NixOS vulnerability analysis and mitigation

6.5

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CVE-2026-3889: NixOS vulnerability analysis and mitigation