rubyzip versions before 3.4.0 contain a path traversal vulnerability in Zip::Entry#extract that fails to properly validate extraction paths using prefix comparison without trailing separators. Attackers can craft archive entries with names like ../upload_backup/owned.sh to write files outside the intended extraction directory into sibling paths sharing the destination prefix.
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Affected Vendors & Products
References
History
Thu, 03 Sep 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | rubyzip versions before 3.4.0 contain a path traversal vulnerability in Zip::Entry#extract that fails to properly validate extraction paths using prefix comparison without trailing separators. Attackers can craft archive entries with names like ../upload_backup/owned.sh to write files outside the intended extraction directory into sibling paths sharing the destination prefix. | |
| Title | rubyzip before 3.4.0 Path Traversal in Zip::Entry#extract via Sibling-Directory Prefix | |
| First Time appeared |
Rubyzip Project
Rubyzip Project rubyzip |
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| Weaknesses | CWE-22 | |
| CPEs | cpe:2.3:a:rubyzip_project:rubyzip:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Rubyzip Project
Rubyzip Project rubyzip |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-03T19:00:09.867Z
Reserved: 2026-09-03T18:10:59.168Z
Link: CVE-2026-85396
No data.
Status : Received
Published: 2026-09-03T19:17:31.527
Modified: 2026-09-03T19:17:31.527
Link: CVE-2026-85396
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OpenCVE Enrichment
No data.