CVE-2026-110453 - Vulnerability Details - OpenCVE

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.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Nixos Subscribe	Nix Subscribe

No data.

No data.

No data.

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

History

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		https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547
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.

MITRE

Status: PUBLISHED

Assigner: mitre

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

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

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

Link: CVE-2026-110453

Vulnrichment

No data.

NVD

Status : Received

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

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

Link: CVE-2026-110453

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-863

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-110453", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-10-14T04:15:46.477Z", "datePublished": "2026-10-14T04:15:47.269Z", "dateUpdated": "2026-10-14T04:15:47.269Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Nix", "vendor": "NixOS", "versions": [{"lessThan": "2.28.8", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "2.30.6", "status": "affected", "version": "2.29.0", "versionType": "semver"}, {"lessThan": "2.31.6", "status": "affected", "version": "2.31.0", "versionType": "semver"}, {"lessThan": "2.34.9", "status": "affected", "version": "2.32.0", "versionType": "semver"}, {"lessThan": "2.35.3", "status": "affected", "version": "2.35.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users from daemon clients."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-10-14T04:15:47.269Z"}, "references": [{"url": "https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.28.8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.29.0", "versionEndExcluding": "2.30.6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.31.0", "versionEndExcluding": "2.31.6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.32.0", "versionEndExcluding": "2.34.9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.35.0", "versionEndExcluding": "2.35.3"}]}]}]}}}