CVE-2026-44592 - Gradient: Unauthenticated worker on /proto → arbitrary NAR write / cache poisoning
CVE ID :CVE-2026-44592
Published : May 14, 2026, 6:39 p.m. | 44 minutes ago
Description :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.
Severity: 0.0 | NA
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Published : May 14, 2026, 6:39 p.m. | 44 minutes ago
Description :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.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...