{"id":"UBUNTU-CVE-2026-26960","details":"node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.","modified":"2026-05-20T16:12:11.624592454Z","published":"2026-02-20T02:16:00Z","upstream":["CVE-2026-26960"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-26960"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-26960"},{"type":"REPORT","url":"https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx"},{"type":"REPORT","url":"https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384"},{"type":"REPORT","url":"https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f"}],"affected":[{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/node-tar?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.18-1","0.1.18-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-tar","binary_version":"0.1.18-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/node-tar?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-2","1.0.3-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-tar","binary_version":"1.0.3-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-tar?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-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/node-tar?arch=source&distro=esm-apps%2Ffocal"},"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_name":"node-tar","binary_version":"4.4.10+ds1-2ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-tar?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-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-tar?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_name":"node-tar","binary_version":"6.1.13+~cs7.0.5-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-tar?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-2026-26960.json"}},{"package":{"name":"node-tar","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-tar?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.1+~cs7.0.8-1","6.2.1+ds1+~cs6.1.13-6","6.2.1+ds1+~cs6.1.13-7","6.2.1+ds1+~cs6.1.13-10"],"ecosystem_specific":{"binaries":[{"binary_version":"6.2.1+ds1+~cs6.1.13-10","binary_name":"node-tar"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26960.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}