CVE-2026-77518: 1panel-Dev Maxkb

Medium severity, CVSS 5.0. EPSS: 0.3% chance of exploitation in the next 30 days.

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal workspace user who knows another user's active MCP tool_id in the same workspace can retrieve the hidden tool through the tool-detail route because it does not apply the per-resource authorization used by the list route. The response includes Tool.code, which may contain MCP server configuration and headers, and an attacker who can create or edit an attacker-owned workflow can place the same foreign mcp_tool_id in a workflow mcp-node so workflow debug uses the owner's MCP configuration without verifying permission to use that tool. No fixed version is available as of this review.

Affected products

• 1panel-Dev Maxkb: up to and including 2.10.2-lts

Published 2026-09-21. Last modified 2026-09-22.