{"id":"UBUNTU-CVE-2026-56876","details":"extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.","modified":"2026-06-29T23:19:15.827595346Z","published":"2026-06-26T18:17:00Z","upstream":["CVE-2026-56876"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-56876"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-56876"},{"type":"REPORT","url":"https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf"},{"type":"REPORT","url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-56876"}],"affected":[{"package":{"name":"node-extract-zip","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-extract-zip?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+ds-1","2.0.1+ds-3"],"ecosystem_specific":{"binaries":[{"binary_name":"node-extract-zip","binary_version":"2.0.1+ds-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56876.json"}},{"package":{"name":"node-extract-zip","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-extract-zip?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+ds-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-extract-zip","binary_version":"2.0.1+ds-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56876.json"}},{"package":{"name":"node-extract-zip","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-extract-zip?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+ds-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-extract-zip","binary_version":"2.0.1+ds-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56876.json"}},{"package":{"name":"node-extract-zip","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-extract-zip?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+ds-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-extract-zip","binary_version":"2.0.1+ds-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56876.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}