CVE-2026-54149

MaxKB MCP tool import validation bypass allows post-authentication remote code execution

CVSS 8.8 HIGHEPSS 0.4%CWE-78

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

10 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

MaxKB is an open-source AI assistant for enterprise. Prior to 2.10.0-lts, MaxKB tool import functionality in apps/tools/serializers/tool.py and MCP referencing mode in apps/application/chat_pipeline/step/chat_step/impl/base_chat_step.py do not consistently validate MCP transport type, allowing an authenticated user to import a .tool file containing stdio transport with malicious commands and trigger the configuration through an AI Chat node so MultiServerMCPClient executes arbitrary system commands. This issue is fixed in version 2.10.0-lts.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1Panel-dev · MaxKB

References

https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.0-lts https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-4pr3-9xhm-98x5