CVE-2020-28337: Microweber

High severity, CVSS 7.2. EPSS: 16.6% chance of exploitation in the next 30 days.

A directory traversal issue in the Utils/Unzip module in Microweber through 1.1.20 allows an authenticated attacker to gain remote code execution via the backup restore feature. To exploit the vulnerability, an attacker must have the credentials of an administrative user, upload a maliciously constructed ZIP file with file paths including relative paths (i.e., ../../), move this file into the backup directory, and execute a restore on this file.

Affected products

• Microweber Microweber: up to and including 1.1.20

Published 2021-02-15. Last modified 2026-06-17.