{"id":"GHSA-jmr9-qjv8-65gv","summary":"extract-zip unvalidated symlink path traversal","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.","aliases":["CVE-2026-56876"],"modified":"2026-09-10T03:51:08.769710691Z","published":"2026-06-26T18:34:00Z","database_specific":{"github_reviewed_at":"2026-08-12T19:22:03Z","nvd_published_at":"2026-06-26T18:17:03Z","cwe_ids":["CWE-22"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56876"},{"type":"PACKAGE","url":"https://github.com/max-mapper/extract-zip"},{"type":"WEB","url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json"},{"type":"WEB","url":"https://www.cve.org/CVERecord?id=CVE-2026-56876"}],"affected":[{"package":{"name":"extract-zip","ecosystem":"npm","purl":"pkg:npm/extract-zip"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.0.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-jmr9-qjv8-65gv/GHSA-jmr9-qjv8-65gv.json"}}],"schema_version":"1.9.0","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"}]}