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Vulnerability record · CVE-2026-54149 · published 10 July 2026

CVE-2026-54149: OS command injection vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.55% · top 56.3% CWE-78 · OS command injection Deferred
8.8CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
10 Jul 2026Last modified by NVD

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.

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

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-54149), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.