Description
MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path (loading MCP config from the database). The else branch, responsible for loading mcp_servers directly from user-supplied JSON remains completely unpatched. Since mcp_source is an optional field (required=False), an attacker can simply omit it or set it to any non-referencing value to bypass the fix. By calling the workflow creation API directly with a crafted JSON payload, an attacker can inject a complete MCP node configuration with stdio transport, arbitrary command, and args — achieving RCE when the workflow is triggered via chat. This issue has been fixed in version 2.8.0.
INFO
Published Date :
2026-04-14T00:03:16.020Z
Last Modified :
2026-04-14T13:34:07.454Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-39417 vulnerability.
| Vendors | Products |
|---|---|
| 1panel |
|
| Maxkb |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39417.
