NixOS vulnerabilities
We track 17 vulnerabilities in NixOS products across 5 products. 17 are rated high or critical, and none are known to be exploited. The most recent was published on October 14, 2026.
Latest NixOS vulnerabilities
- 8.0 High severity
Nix: Incorrect Behavior Order
Nix before 2.35.3 and Lix before 2.95.4 allow privilege escalation via a repair operation because it could destroy and then replace a store path before content verification.
- 7.5 High severity
Nix: Integer Overflow or Wraparound
Nix before 2.35.3 and Lix before 2.95.4 have an integer overflow and resultant out-of-bounds write when evaluating untrusted expressions because list allocation is mishandled.
- 8.5 High severity
nixpkgs: Incorrect Default Permissions
Nixpkgs is a collection of software packages that can be installed with the Nix package manager. Prior to the 25.11 and 26.05 channel fixes, the NixOS module for MySQL services.mysql initializes the MySQL database in a way that allows local users, such as unpr
- 7.5 High severity
Nix: Uncontrolled Recursion
An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means
- 8.4 High severity
nix: UNIX Symbolic Link (Symlink) Following
Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arbitrary overwrites of files writable by the Nix process orchestrating the builds (typically the Nix daemon running as root in multi-user installations)
- 9.1 Critical severity
nixpkgs: Missing Authentication for Critical Functionality
The NixOs Odoo package is an open source ERP and CRM system. From 21.11 to before 25.11 and 26.05, every NixOS based Odoo setup publicly exposes the database manager without any authentication. This allows unauthorized actors to delete and download the entire
- 8.7 High severity
nixpkgs: Insertion of Sensitive Information into Externally-Accessible File or Directory
Tandoor Recipes is a recipe manager than can be installed with the Nix package manager. Starting in version 23.05 and prior to version 26.05, when using the default configuration of Tandoor Recipes, specifically using SQLite and default `MEDIA_ROOT`, the full
- 7.5 High severity
hydra: Missing Authentication for Critical Functionality
Hydra is a continuous integration service for Nix based projects. Prior to commit f7bda02, /api/push-github and /api/push-gitea are called by the corresponding forge without HTTP Basic authentication. Both forges do however feature HMAC signing with a secret k
- 7.9 High severity
nix: Privilege Dropping / Lowering Errors
Nix is a package manager for Linux and other Unix systems. Builds with Nix 2.30.0 on macOS were executed with elevated privileges (root), instead of the build users. The fix was applied to Nix 2.30.1. No known workarounds are available.
- 8.8 High severity
nixpkgs: Creation of Temporary File With Insecure Permissions
make-initrd-ng is a tool for copying binaries and their dependencies. Local privilege escalation affecting all NixOS users. With systemd.shutdownRamfs.enable enabled (the default) a local user is able to create a program that will be executed by root during sh
- 9.8 Critical severity
Red Hat Enterprise Linux 10: Out-of-bounds Write
A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bo
- 7.5 High severity
Red Hat Enterprise Linux 10: Improper Limitation of a Pathname to a Restricted Directory
A flaw was found in rsync. When using the `--safe-links` option, the rsync client fails to properly verify if a symbolic link destination sent from the server contains another symbolic link within it. This results in a path traversal vulnerability, which may l
- 7.5 High severity
Red Hat Enterprise Linux 10: Improper Limitation of a Pathname to a Restricted Directory
A path traversal vulnerability exists in rsync. It stems from behavior enabled by the `--inc-recursive` option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the `--in
- 7.5 High severity
Red Hat Enterprise Linux 10: Use of Uninitialized Resource
A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialize
- 8.8 High severity
nix: Improper Limitation of a Pathname to a Restricted Directory
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has a
- 7.5 High severity
hydra: Missing Authentication for Critical Functionality
Hydra is a Continuous Integration service for Nix based projects. It is possible to trigger evaluations in Hydra without any authentication. Depending on the size of evaluations, this can impact the availability of systems. The problem can be fixed by applying
- 7.8 High severity
calamares-nixos-extensions: Plaintext Storage of a Password
calamares-nixos-extensions provides Calamares branding and modules for NixOS, a distribution of GNU/Linux. Users who installed NixOS through the graphical installer who used manual disk partitioning to create a setup where the system was booted via legacy BIOS