CVE-2026-17524

Directory Traversal in zip-lib via Caching Path Validation

Published Jul 28, 2026 CVSS 4.0 · 8.7 High EPSS 1.2% KEV · Not listed
Description
Versions of the package zip-lib before 1.1.0 are vulnerable to Directory Traversal via the caching mechanism for path validation during the extraction process. An attacker can bypass security checks designed to prevent directory traversal. The intended security function, isOutsideTargetFolder, only checks and caches the path status when the initial directory symlink is created during the first extraction.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Directory Traversal in zip-lib via Caching Path Validation
Type Values Removed Values Added
First Time appeared Fpsqdb
Fpsqdb zip-lib
Vendors & Products Fpsqdb
Fpsqdb zip-lib
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Versions of the package zip-lib before 1.1.0 are vulnerable to Directory Traversal via the caching mechanism for path validation during the extraction process. An attacker can bypass security checks designed to prevent directory traversal. The intended security function, isOutsideTargetFolder, only checks and caches the path status when the initial directory symlink is created during the first extraction.
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
snyk
Published
Updated
Jul 28, 2026, 4:06 PM
Reserved
Jul 27, 2026, 8:21 AM
Status
Deferred
Published
Jul 28, 2026, 6:16 AM
Modified
Jul 30, 2026, 8:11 PM