CVE-2026-56876: extract-zip unvalidated symlink path traversal

June 26, 2026 (updated August 12, 2026)

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

github.com/advisories/GHSA-jmr9-qjv8-65gv
github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf
nvd.nist.gov/vuln/detail/CVE-2026-56876
raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json
www.cve.org/CVERecord?id=CVE-2026-56876

Code Behaviors & Features

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