Sandbox Escape Vulnerability in Nix and Lix on macOS
CVE-2026-110451

4.3MEDIUM

Key Information:

Vendor

Nixos

Status
Nix
Vendor
CVE Published:
14 October 2026

What is CVE-2026-110451?

Nix versions earlier than 2.35.3 and Lix versions earlier than 2.95.4 on macOS present a significant risk by allowing a sandbox escape due to mishandled size thresholds in unconfined builds. This vulnerability enables an attacker to potentially bypass the security restrictions imposed by the Seatbelt sandbox, which could lead to unauthorized access or execution of malicious code within the system.

Affected Version(s)

Nix 0 < 2.28.8

Nix 2.29.0 < 2.30.6

Nix 2.31.0 < 2.31.6

References

https://discourse.nixos.org/t/security-advisory-for-nix-a...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.