CVE-2025-53927: Maxkb

Medium severity, CVSS 6.3. EPSS: 0.2% chance of exploitation in the next 30 days.

MaxKB is an open-source AI assistant for enterprise. Prior to version 2.0.0, the sandbox design rules can be bypassed because MaxKB only restricts the execution permissions of files in a specific directory. Therefore, an attacker can use the `shutil.copy2` method in Python to copy the command they want to execute to the executable directory. This bypasses directory restrictions and reverse shell. Version 2.0.0 fixes the issue.

Affected products

• Maxkb Maxkb: before 2.0.0 (fixed in 2.0.0)

Published 2025-07-17. Last modified 2026-06-17.