What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-78

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.

Affected products

• 1Panel-dev MaxKB: before 2.10.0-lts

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
• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-4pr3-9xhm-98x5

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