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cve/2021/CVE-2021-43099.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
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CVE-2021-43099

Description

An Archive Extraction (AKA "Zip Slip) vulnerability exists in bbs 5.3 in the UpgradeNow function in UpgradeManageAction.java, which unzips the arbitrary upladed zip file without checking filenames. The vulnerability is exploited using a specially crafted archive that holds directory traversal filenames (e.g. ../../evil.exe).

POC

Reference

Github

No PoCs found on GitHub currently.