CVE-2026-54149Public exploitNetwork attack vector

Authenticated command execution via unchecked MCP transport

Published Jul 10, 2026 · Updated Jul 10, 2026

OS command injection in FIT2CLOUD MaxKB before 2.10.0-lts allows remote authenticated users to execute system commands via MCP tool import. Import.import_ stores a tool's stdio transport without calling validate_mcp_transport, and the AI Chat referencing branch passes it to MultiServerMCPClient for subprocess execution. Any MaxKB account can reach the chain; commands run with the server process's privileges and can compromise the host.

CVSS severity8.8
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in FIT2CLOUD MaxKB before 2.10.0-lts allows remote authenticated users to execute system commands via MCP tool import. Import.import_ stores a tool's stdio transport without calling validate_mcp_transport, and the AI Chat referencing branch passes it to MultiServerMCPClient for subprocess execution. Any MaxKB account can reach the chain; commands run with the server process's privileges and can compromise the host.

The record

CVE
CVE-2026-54149
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
KubeOperator
Product
MaxKB
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.10.0-lts

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

KubeOperator · MaxKBversion=< 2.10.0-lts

Published CVSS scores

8.8GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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