Vulnerability · Published Oct 14, 2026 · Assigned by mitre
CVE-2026-110452
Medium 4.0
In plain English
A medium-severity security flaw in Nix from NixOS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nix | no fix listed | DEBIAN-CVE-2026-110452 |
| Debian:13 | nix | no fix listed | DEBIAN-CVE-2026-110452 |
| Debian:14 | nix | 2.35.4+dfsg-1 | DEBIAN-CVE-2026-110452 |
| Ubuntu:26.04:LTS | nix | no fix listed | UBUNTU-CVE-2026-110452 |
| Ubuntu:26.10 | nix | no fix listed | UBUNTU-CVE-2026-110452 |
Affected products (as reported)
Weakness: CWE-708 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N