1Panel-dev MaxKB up to 2.9.2 Dispatch Path tool_ids/skill_tool_ids/mcp_tool_ids privileges management

Summaryinfo

A vulnerability labeled as critical has been found in 1Panel-dev MaxKB up to 2.9.2. This affects an unknown part of the component Dispatch Path. Such manipulation of the argument tool_ids/skill_tool_ids/mcp_tool_ids leads to privileges management. This vulnerability is listed as CVE-2026-77516. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in 1Panel-dev MaxKB up to 2.9.2. Affected by this issue is an unknown part of the component Dispatch Path. The manipulation of the argument tool_ids/skill_tool_ids/mcp_tool_ids with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-77516 since 08/20/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/21/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• 1Panel-dev

Name

• MaxKB

Version

• 2.9.0
• 2.9.1
• 2.9.2

Website

• Product: https://github.com/1Panel-dev/MaxKB/

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