Vulnerability Database

308,926

Total vulnerabilities in the database

CVE-2021-43099

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).

  • Published: Mar 28, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-43099
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.9
  • AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CVSS v2:

  • Severity: Low
  • Score: 4
  • AV:N/AC:L/Au:S/C:N/I:P/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
diyhi / bbs 5.3 5.3.x