Vulnerability · Published Jul 10, 2026 · Assigned by GitHub_M

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

High 8.8

In plain English

A high-severity OS command injection in MaxKB from 1Panel-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 58.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
1Panel-dev	MaxKB	< 2.10.0-lts

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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