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.
Problem type
Affected products
< 1.1.0 - AFFECTED
References
https://security.snyk.io/vuln/SNYK-JS-ZIPLIB-13834403
https://github.com/fpsqdb/zip-lib/commit/0c29b1e17050f2611f4f37e6aaa92a60b3cb89d5
https://github.com/fpsqdb/zip-lib/issues/14
GitHub Security Advisories
GHSA-73hr-7685-xwj3
Versions of the package zip-lib before 1.1.0 are vulnerable to Directory Traversal via the...
https://github.com/advisories/GHSA-73hr-7685-xwj3Versions 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.
https://nvd.nist.gov/vuln/detail/CVE-2026-17524
https://github.com/fpsqdb/zip-lib/issues/14
https://github.com/fpsqdb/zip-lib/commit/0c29b1e17050f2611f4f37e6aaa92a60b3cb89d5
https://security.snyk.io/vuln/SNYK-JS-ZIPLIB-13834403
https://github.com/advisories/GHSA-73hr-7685-xwj3
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-17524Click to expand
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"dateUpdated": "2026-07-28T05:00:00.713Z",
"dateReserved": "2026-07-27T08:21:00.930Z",
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