CVE-2026-110452

nix: nix: Unauthorized file modification via improper multi-user installer ownership

Published Oct 14, 2026 CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed
Description
The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked the installer) even though it should be root ownership.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Nix Multi-User Installer Grants User-Owned Packages Instead of Root nix: nix: Unauthorized file modification via improper multi-user installer ownership
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Title Nix Multi-User Installer Grants User-Owned Packages Instead of Root
Type Values Removed Values Added
Title Multi‑user Installer Incorrectly Assigns Store Ownership in Nix
Type Values Removed Values Added
Title Multi‑user Installer Incorrectly Assigns Store Ownership in Nix
Type Values Removed Values Added
Description The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked the installer) even though it should be root ownership.
First Time appeared Nixos
Nixos nix
Weaknesses CWE-708
CPEs cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*
Vendors & Products Nixos
Nixos nix
References
Metrics cvssV3_1

{'score': 4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 14, 2026, 5:27 PM
Reserved
Oct 14, 2026, 4:12 AM
Status
Deferred
Published
Oct 14, 2026, 5:16 AM
Modified
Oct 16, 2026, 7:56 PM
Severity
Moderate
Public date
Oct 14, 2026, 4:12 AM