CVE-2026-110449 - Vulnerability Details - OpenCVE

Nix before 2.35.3 and Lix before 2.95.4 have an integer overflow and resultant out-of-bounds write when evaluating untrusted expressions because list allocation is mishandled.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Nixos	Nix

No data.

No data.

References

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

History

Fri, 16 Oct 2026 01:45:00 +0000

Type	Values Removed	Values Added
Title		Integer Overflow Leading to Out-of-Bounds Write in Nix and Lix

Thu, 15 Oct 2026 13:30:00 +0000

Type	Values Removed	Values Added
Title	Integer Overflow and Out-of-Bounds Write in Nix and Lix During Untrusted Expression Evaluation

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

Type	Values Removed	Values Added
Title		Integer Overflow and Out-of-Bounds Write in Nix and Lix During Untrusted Expression Evaluation

Wed, 14 Oct 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 14 Oct 2026 04:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Nixos Nixos nix
CPEs		cpe:2.3:a:nixos:nix::::::::
Vendors & Products		Nixos Nixos nix

Wed, 14 Oct 2026 04:15:00 +0000

Type	Values Removed	Values Added
Description		Nix before 2.35.3 and Lix before 2.95.4 have an integer overflow and resultant out-of-bounds write when evaluating untrusted expressions because list allocation is mishandled.
Weaknesses		CWE-190
References		https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-10-14T03:59:11.284Z

Updated: 2026-10-14T14:22:22.609Z

Reserved: 2026-10-14T03:59:10.591Z

Link: CVE-2026-110449

Vulnrichment

Updated: 2026-10-14T14:22:17.515Z

NVD

Status : Deferred

Published: 2026-10-14T04:18:17.317

Modified: 2026-10-16T19:56:15.773

Link: CVE-2026-110449

Redhat

No data.

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