CVE-2026-110453

{
  "id": "CVE-2026-110453",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-14T05:16:43.377",
  "lastModified": "2026-10-19T19:17:20.607",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nix before 2.35.3, when unsandboxed on macOS or FreeBSD, incorrectly allows connections made by build users from daemon clients."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "NixOS",
          "product": "Nix",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "2.28.8",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.29.0",
              "lessThan": "2.30.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.31.0",
              "lessThan": "2.31.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.32.0",
              "lessThan": "2.34.9",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.35.0",
              "lessThan": "2.35.3",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-19T18:33:23.046919Z",
          "id": "CVE-2026-110453",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547",
      "source": "[email protected]"
    }
  ]
}