CVE catalog

CVE-2026-110452

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.

[CVE catalog]

Severity: Medium · CVSS 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Published: Oct 14, 2026, 5:16:43 AM UTC
Updated: Oct 14, 2026, 5:16:43 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.13% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nix	sid	`2.34.8+dfsg-1`	vulnerable
Debian	nix	forky	`2.34.8+dfsg-1`	vulnerable
Debian	nix	trixie	`2.26.3+dfsg-1`	vulnerable
Debian	nix	bookworm	`2.8.0-1.1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nix	source	sid	`(unfixed)`	not yet assigned	Not reported	[1151197]
Debian	nix	source	forky	`(unfixed)`	not yet assigned	Not reported	[1151197]
Debian	nix	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1151197]
Debian	nix	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1151197]

[Debian bug #1151197]

Notes

[trixie] nix: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[nix-bin]Affected
Source package: [nix]
Details (2)
- 2.8.0-1.1 · arm64 · bookworm
  Affected
  nvd · nix · debian · bookworm; nvd · nix · debian · 12
- 2.8.0-1.1+b1 · amd64 · bookworm
  Affected
  nvd · nix · debian · bookworm; nvd · nix · debian · 12
[nix-setup-systemd]Affected
Source package: [nix]
Details (2)
- 2.8.0-1.1 · all · bookworm
  Affected
  nvd · nix · debian · bookworm; nvd · nix · debian · 12
- 2.8.0-1.1 · all · bookworm
  Affected
  nvd · nix · debian · bookworm; nvd · nix · debian · 12

[Debian 13 (Trixie)]

[nix-bin]Affected
Source package: [nix]
Details (2)
- 2.26.3+dfsg-1 · amd64 · trixie
  Affected
  nvd · nix · debian · 13
- 2.26.3+dfsg-1 · arm64 · trixie
  Affected
  nvd · nix · debian · 13
[nix-setup-systemd]Affected
Source package: [nix]
Details (2)
- 2.26.3+dfsg-1 · all · trixie
  Affected
  nvd · nix · debian · 13
- 2.26.3+dfsg-1 · all · trixie
  Affected
  nvd · nix · debian · 13

Observed: Oct 24, 2026, 9:14:31 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]