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CVE-2026-54149— MaxKB MCP tool import validation bypass allows post-authentication remote code execution

Quick assessment

Affected
1Panel-dev MaxKB
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

1Panel-dev MaxKB是1Panel-dev组织开源的一款基于大语言模型和 RAG 的开源知识库问答系统。 1Panel-dev MaxKB 2.10.0-lts之前版本存在命令注入漏洞，该漏洞源于对MCP传输类型验证不一致，允许经过身份验证的用户导入包含stdio传输的.tool文件，触发配置导致执行任意系统命令。

CVSS 8.8 · High EPSS 0.55% · P44

Affected Version Matrix 1

VendorProduct Version RangeStatus
1Panel-dev MaxKB < 2.10.0-lts affected
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I. Basic Information for CVE-2026-54149

Vulnerability Information
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Vulnerability Title
MaxKB MCP tool import validation bypass allows post-authentication remote code execution
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
1Panel-dev MaxKB 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
1Panel-dev MaxKB是1Panel-dev组织开源的一款基于大语言模型和 RAG 的开源知识库问答系统。 1Panel-dev MaxKB 2.10.0-lts之前版本存在命令注入漏洞，该漏洞源于对MCP传输类型验证不一致，允许经过身份验证的用户导入包含stdio传输的.tool文件，触发配置导致执行任意系统命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
1Panel-dev MaxKB < 2.10.0-lts -

II. Public POCs for CVE-2026-54149

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6317 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-54149

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Vendor Advisories for CVE-2026-54149 (1)

Vendor Pages for CVE-2026-54149 (1)

IV. Related Vulnerabilities

Same product: MaxKB
Same vendor: 1Panel-dev
Same weakness: CWE-78

V. Comments for CVE-2026-54149

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