GitHub Advisoryadvisory · npm
GHSA-jmr9-qjv8-65gv extract-zip unvalidated symlink path traversal
HIGH
Official page ↗
- Aliases
- CVE-2026-56876
- Ecosystem
- npm
- Packages
- extract-zip
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-22
- Reviewed
- 2026-08-12
Affected packages
• npm extract-zip: <= 2.0.1 (no fix yet)
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.
Related
Alias · CVE (1)
- CVE-2026-56876 extract-zip does not validate symlink targets when extracting zip archives. vulnerability
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf web
- https://nvd.nist.gov/vuln/detail/CVE-2026-56876 advisory
- https://github.com/max-mapper/extract-zip package
- 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 web