Vulnerability · Published Oct 14, 2026 · Assigned by mitre
CVE-2026-110451
Medium 4.3
In plain English
A medium-severity incorrect authorization in Nix from NixOS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Nix before 2.35.3 and Lix before 2.95.4 on macOS allow a Seatbelt sandbox escape (for an unconfined build) because a certain size threshold is mishandled.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:26.04:LTS | nix | no fix listed | UBUNTU-CVE-2026-110451 |
| Ubuntu:26.10 | nix | no fix listed | UBUNTU-CVE-2026-110451 |
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N