CVE-2026-77516

MaxKB is an open-source AI assistant for enterprise. From version 2.0.0 through 2.9.2, a lowest-role workspace member denied access to a tool by WorkspaceUserResourcePermission can still bind its identifier through tool_ids, skill_tool_ids, or mcp_tool_ids and execute it through the agent or workflow dispatch path. The dispatch path does not reapply the per-tool grant enforced by dedicated tool routes, and tool execution decrypts server-side init_params, allowing the caller to receive credentials carried by the denied tool. No fixed version is available as of this review.

• CWE-639
• CWE-862

• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-383v-fx78-pphm

Published

Sep 21, 2026

Last Modified

Sep 21, 2026

Status

Deferred

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