{"id":"UBUNTU-CVE-2026-29786","details":"node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.","modified":"2026-03-14T09:20:21.749123Z","published":"2026-03-07T16:15:00Z","upstream":["CVE-2026-29786"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-29786"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-29786"},{"type":"REPORT","url":"https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96"},{"type":"REPORT","url":"https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f"}],"affected":[{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/node-tar@0.1.18-1ubuntu0.1~esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.18-1","0.1.18-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.1.18-1ubuntu0.1~esm1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/node-tar@1.0.3-2ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-2","1.0.3-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.3-2ubuntu0.1~esm1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-tar@2.2.1-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.1-1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/node-tar@4.4.10+ds1-2ubuntu1+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.10+ds1-2","4.4.10+ds1-2ubuntu1","4.4.10+ds1-2ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.4.10+ds1-2ubuntu1+esm1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-tar@6.1.11+ds1+~cs6.0.6-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.7+~cs11.3.10-1","6.1.11+~cs11.3.10-1","6.1.11+ds1+~cs6.0.6-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.1.11+ds1+~cs6.0.6-1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-tar@6.1.13+~cs7.0.5-3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.13+~cs7.0.5-1","6.1.13+~cs7.0.5-3"],"ecosystem_specific":{"binaries":[{"binary_version":"6.1.13+~cs7.0.5-3","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-tar@6.2.1+~cs7.0.8-1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.1+~cs7.0.8-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.2.1+~cs7.0.8-1","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-29786.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}