CVE-2026-44029
mediumpriority · track · 0EPSS 0.006 · 47 %ileEUUSEPSS · scored 2026-10-28
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);
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://github.com/NixOS/nix/tagsPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-44029cnnvd
- https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407enisa_euvd
- https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5penisa_euvd
- https://www.openwall.com/lists/oss-security/2026/05/04/33enisa_euvd
- https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407nvd
- https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5pnvd
- https://www.openwall.com/lists/oss-security/2026/05/04/33nvd
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