CVE-2025-66419: Maxkb

Critical severity, CVSS 10.0. EPSS: 0.3% chance of exploitation in the next 30 days.

MaxKB is an open-source AI assistant for enterprise. In versions 2.3.1 and below, the tool module allows an attacker to escape the sandbox environment and escalate privileges under certain concurrent conditions. This issue is fixed in version 2.4.0.

Affected products

• Maxkb Maxkb: before 2.4.0 (fixed in 2.4.0)

Published 2025-12-11. Last modified 2026-10-07.