{"id":"CVE-2026-110452","state":"PUBLISHED","title":"The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked the installer) even though it should be root ownership.","description":"The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked the installer) even though it should be root ownership.","publishedAt":"2026-10-14T04:12:28.499Z","updatedAt":"2026-10-14T17:27:51.579Z","severity":{"score":4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"mitre"},"assigner":"mitre","products":["NixOS Nix"],"affected":[{"vendor":"NixOS","product":"Nix","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.28.8","versionType":"semver"},{"version":"2.29.0","status":"affected","lessThan":"2.30.6","versionType":"semver"},{"version":"2.31.0","status":"affected","lessThan":"2.31.6","versionType":"semver"},{"version":"2.32.0","status":"affected","lessThan":"2.34.9","versionType":"semver"},{"version":"2.35.0","status":"affected","lessThan":"2.35.3","versionType":"semver"}]}],"references":["https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547"],"weaknesses":["CWE-708"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/110xxx/CVE-2026-110452.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110452","state":"PUBLISHED","datePublished":"2026-10-14T04:12:28.499Z","dateUpdated":"2026-10-14T17:27:51.579Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-10-14T04:12:27.246Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The multi-user installer in Nix before 2.35.3 sets the ownership of store contents to the user (who invoked the installer) even though it should be root ownership."}],"affected":[{"vendor":"NixOS","product":"Nix","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.28.8","versionType":"semver"},{"version":"2.29.0","status":"affected","lessThan":"2.30.6","versionType":"semver"},{"version":"2.31.0","status":"affected","lessThan":"2.31.6","versionType":"semver"},{"version":"2.32.0","status":"affected","lessThan":"2.34.9","versionType":"semver"},{"version":"2.35.0","status":"affected","lessThan":"2.35.3","versionType":"semver"}]}],"references":[{"url":"https://discourse.nixos.org/t/security-advisory-for-nix-and-lix-october-2026/80547"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-708","description":"CWE-708 Incorrect Ownership Assignment","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-10-14T04:12:28.499Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionEndExcluding":"2.28.8"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.29.0","versionEndExcluding":"2.30.6"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.31.0","versionEndExcluding":"2.31.6"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.32.0","versionEndExcluding":"2.34.9"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.35.0","versionEndExcluding":"2.35.3"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T17:25:47.770441Z","id":"CVE-2026-110452","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T17:27:51.579Z"}}]}}}