high8.1
CVE-2026-56876
extract-zip does not validate symlink targets when extracting zip archives.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | extract-zip | <= 2.0.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Max-Mapper | Extract-Zip | through 2.0.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-jmr9-qjv8-65gv
- https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf
- https://nvd.nist.gov/vuln/detail/CVE-2026-56876
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json
- https://www.cve.org/CVERecord?id=CVE-2026-56876