CVE-2026-77516: MaxKB tool execution through agent and workflow dispatch bypasses tool grants

Summary

MaxKB, an open-source enterprise AI assistant, from version 2.0.0 through 2.9.2 lets a lowest-role workspace member bind and execute a tool they are denied by WorkspaceUserResourcePermission, using tool_ids, skill_tool_ids, or mcp_tool_ids through the agent or workflow dispatch path. Dispatch does not reapply the per-tool grant enforced by dedicated tool routes, so the caller can receive credentials in the denied tool's server-side init_params.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Related items

• HighCVE-2026-123818: LMDeploy is a toolkit for compressing, deploying, and serving large language models. From 0.12.3 until 0.15.0…Similar attack · NVD/CVE Database
• HighGHSA-vvr2-h2jp-838m: Code Graph RAG: MCP paginated read_file path traversal / arbitrary file readSimilar attack · GitHub Advisory Database
• MediumAttackers Crash Claude's 'Office Party' Flaw to Run Malicious Code on LinuxSimilar attack · Dark Reading
• MediumCVE-2026-124588: huggingface finetrainers code injection via Library argumentSimilar attack · NVD/CVE Database
• MediumTaiwan-Based Hacker Used BOSSAI AI Agents to Steal Taipei Emergency Dispatch RecordsSimilar attack · The Hacker News