Bug 2552069 (CVE-2026-110453)

Summary: CVE-2026-110453 nix: nix: Unauthorized daemon access via unsandboxed build user connections
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Nix. When running in an unsandboxed configuration on macOS or FreeBSD, the service incorrectly permits connections initiated by build users to daemon clients. A local attacker or malicious build process could exploit this vulnerability to interact directly with the daemon, potentially compromising the integrity of build operations.
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Description OSIDB Bzimport 2026-10-14 04:32:41 UTC
Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users from daemon clients.