CVE-2026-44029

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);

• CWE-36

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

Published

May 5, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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