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    CVE-2026-110449

    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.

    Published:Oct 14, 2026
    Last Modified:Oct 16, 2026
    EPS:Oct 14, 2026
    EPSS Score:0.00249
    CVSS Score:7.5

    Affected Products

    Vendor
    Nixos
    Product
    Nix

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-110453 (CVSS 4.3) — Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users fr…
    CVE-2026-110452 (CVSS 4) — The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked th…
    CVE-2026-110451 (CVSS 4.3) — Nix before 2.35.3 and Lix before 2.95.4 on macOS allow a Seatbelt sandbox escape (for an unconfined build) bec…
    CVE-2026-110450 (CVSS 8) — Nix before 2.35.3 and Lix before 2.95.4 allow privilege escalation via a repair operation because it could des…
    CVE-2026-64846 (CVSS 2.8) — Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed wi…
    CVE-2026-44029 (CVSS 5.3) — An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unp…
    CVE-2026-44028 (CVSS 7.5) — An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archiv…
    CVE-2026-39860 (CVSS 9) — Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arb…
    CVE-2025-53819 (CVSS 7.9) — Nix is a package manager for Linux and other Unix systems. Builds with Nix 2.30.0 on macOS were executed with …
    CVE-2025-52993 (CVSS 5.6) — A race condition in the Nix, Lix, and Guix package managers enables changing the ownership of arbitrary files …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High