CVE-2026-56876

extract-zip unvalidated symlink path traversal

State: Published
Severity: 8.6 High
Published: Jun 26, 2026
Updated: Jun 30, 2026
Reserved: Jun 23, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	cisa-cg
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	cisa-cg

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-61 UNIX Symbolic Link (Symlink) Following

Affected Products

Product	Versions
extract-zipmax-mapper	all versionsAffected

References

urlthird-party-advisory
urlthird-party-advisory
urlvdb-entry

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