CVE-2026-56876

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 4.0

8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWEs

CWE-22, CWE-61

Published

2026-06-26

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• max-mapper:extract-zip

Packages (OSV)

References

• https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf
• 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

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