CVE-2026-44029
medium
CVSS v3
5.3
CVSS v4 NEW
—
VIR risk
5.3
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);
Predictions
Exploit likelihood
63%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | trixie | affected | |
References
- 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
- https://www.suse.com/security/cve/CVE-2026-44029.html
- https://security-tracker.debian.org/tracker/CVE-2026-44029
CWEs
CWE-36
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.