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HIGH

CVE-2026-17524

CVSS v3

7.5

HIGH

EPSS Score

1.2 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-07-28
Last Modified
2026-07-28

Frequently asked questions

What is CVE-2026-17524?

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.

Is CVE-2026-17524 actively exploited?

Active exploitation of CVE-2026-17524 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-17524?

CVE-2026-17524 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2026-17524 affecting your environment?

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