Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users from daemon clients.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00131.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
NixOS Nix unaffected
Version Status Constraints
0 affected < 2.28.8
2.29.0 affected < 2.30.6
2.31.0 affected < 2.31.6
2.32.0 affected < 2.34.9
2.35.0 affected < 2.35.3

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

Vendors Products
Nixos Subscribe
Nix Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547 cve-icon cve-icon
History

Wed, 14 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Title Unsandboxed Nix Daemon Allows Connections from Build Users on macOS and FreeBSD

Wed, 14 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Description Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users from daemon clients.
First Time appeared Nixos
Nixos nix
Weaknesses CWE-863
CPEs cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*
Vendors & Products Nixos
Nixos nix
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-14T04:15:47.269Z

Reserved: 2026-10-14T04:15:46.477Z

Link: CVE-2026-110453

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T05:16:43.377

Modified: 2026-10-14T05:16:43.377

Link: CVE-2026-110453

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T16:45:04Z

Weaknesses