Nixpkgs security tracker

Untriaged

Permalink CVE-2026-44592

9.4 CRITICAL

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): Low (L)
Privileges Required (PR): None (N)
User Interaction (UI): None (N)
Scope (S): Unchanged (U)
Confidentiality (C): Low (L)
Integrity (I): High (H)
Availability (A): High (H)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): Low (L)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): None (N)
Modified Confidentiality (MC): Low (L)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): High (H)
Modified Availability (MA): High (H)

created 2 months, 1 week ago Activity log

Created suggestion 2 months, 1 week ago

Gradient: Unauthenticated worker on /proto → arbitrary NAR write / cache poisoning

Gradient is a nix-based continuous integration system. In 1.1.0, when GRADIENT_DISCOVERABLE=true (the default, and the NixOS module default), anyone who can reach /proto can register as a worker without any credentials by sending a fresh, never-registered worker UUID. The resulting session has PeerAuth::Open, i.e. it sees jobs from every organisation, and can immediately NarPush/NarUploaded arbitrary store paths into nar_storage and the cached_path table. This vulnerability is fixed in 1.1.1.

References

https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2 x_refsource_CONFIRM

Affected products

gradient

==1.1.0

Matching in nixpkgs

pkgs.python312Packages.gradient

None

pkgs.python312Packages.airgradient

None

pkgs.python313Packages.airgradient

Module for AirGradient

nixos-unstable 0.9.2
- nixpkgs-unstable 0.9.2
- nixos-unstable-small 0.9.2

pkgs.python314Packages.airgradient

Module for AirGradient

nixos-unstable 0.9.2
- nixpkgs-unstable 0.9.2
- nixos-unstable-small 0.9.2

pkgs.gnomeExtensions.gradient-top-bar

Give GNOME's top bar a customizable gradient - choose direction and colors, and optionally use a different style or keep the theme when windows are maximized.