{"id":"CVE-2026-44029","state":"PUBLISHED","title":"An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via \"nix-prefetch-url --unpack\" or \"nix store prefetch-file --unpack\" directory traversal. The fi","description":"An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via \"nix-prefetch-url --unpack\" or \"nix store prefetch-file --unpack\" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);","publishedAt":"2026-05-05T00:51:05.533Z","updatedAt":"2026-05-05T12:43:28.239Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/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":"2.24.7","status":"affected","lessThan":"2.28.7","versionType":"semver"},{"version":"2.29.0","status":"affected","lessThan":"2.29.4","versionType":"semver"},{"version":"2.30.0","status":"affected","lessThan":"2.30.5","versionType":"semver"},{"version":"2.31.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.32.0","status":"affected","lessThan":"2.32.8","versionType":"semver"},{"version":"2.33.0","status":"affected","lessThan":"2.33.6","versionType":"semver"},{"version":"2.34.0","status":"affected","lessThan":"2.34.7","versionType":"semver"}]}],"references":["https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407","https://www.openwall.com/lists/oss-security/2026/05/04/33","https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p"],"weaknesses":["CWE-36"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44029.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44029","state":"PUBLISHED","datePublished":"2026-05-05T00:51:05.533Z","dateUpdated":"2026-05-05T12:43:28.239Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-05-05T00:51:05.139Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via \"nix-prefetch-url --unpack\" or \"nix store prefetch-file --unpack\" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);"}],"affected":[{"vendor":"NixOS","product":"Nix","defaultStatus":"unaffected","versions":[{"version":"2.24.7","status":"affected","lessThan":"2.28.7","versionType":"semver"},{"version":"2.29.0","status":"affected","lessThan":"2.29.4","versionType":"semver"},{"version":"2.30.0","status":"affected","lessThan":"2.30.5","versionType":"semver"},{"version":"2.31.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.32.0","status":"affected","lessThan":"2.32.8","versionType":"semver"},{"version":"2.33.0","status":"affected","lessThan":"2.33.6","versionType":"semver"},{"version":"2.34.0","status":"affected","lessThan":"2.34.7","versionType":"semver"}]}],"references":[{"url":"https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407"},{"url":"https://www.openwall.com/lists/oss-security/2026/05/04/33"},{"url":"https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/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-36","description":"CWE-36 Absolute Path Traversal","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-05-05T00:58:14.984Z"},"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:*:*:*:*:*:*:*:*","versionStartIncluding":"2.24.7","versionEndExcluding":"2.28.7"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.29.0","versionEndExcluding":"2.29.4"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.30.0","versionEndExcluding":"2.30.5"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.31.0","versionEndExcluding":"2.31.5"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.32.0","versionEndExcluding":"2.32.8"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.33.0","versionEndExcluding":"2.33.6"},{"vulnerable":true,"criteria":"cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*","versionStartIncluding":"2.34.0","versionEndExcluding":"2.34.7"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-05T12:43:20.590037Z","id":"CVE-2026-44029","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-05T12:43:28.239Z"}}]}}}