Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/ziad626/extract-zip-security-research/security/advisories/GHS
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/
- https://www.cve.org/CVERecord?id=CVE-2026-56876
FAQ
What is CVE-2026-56876?
CVE-2026-56876 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 wi...
How severe is CVE-2026-56876?
CVE-2026-56876 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56876?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.