CVE-2026-44029

Description

An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407
• https://www.openwall.com/lists/oss-security/2026/05/04/33
• https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p