HIGH 8.1 npm
extract-zip unvalidated symlink path traversal
GHSA-jmr9-qjv8-65gv · CVE-2026-56876
Published · Modified
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Description
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.
References
- WEB https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-56876
- PACKAGE https://github.com/max-mapper/extract-zip
- WEB https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json
- WEB https://www.cve.org/CVERecord?id=CVE-2026-56876
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