prolix-oc Lumiverse up to 0.9.6 MCP Server Creation Endpoint command argument injection

Summaryinfo

A vulnerability, which was classified as critical, was found in prolix-oc Lumiverse up to 0.9.6. This vulnerability affects unknown code of the component MCP Server Creation Endpoint. The manipulation of the argument command results in argument injection. This vulnerability was named CVE-2026-44450. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in prolix-oc Lumiverse up to 0.9.6. Affected is some unknown functionality of the component MCP Server Creation Endpoint. The manipulation of the argument command with an unknown input leads to a argument injection vulnerability. CWE is classifying the issue as CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the MCP server creation endpoint validates the command field against an allowlist of binary names but forwards the args array to the child process without any validation. Every binary on the allowlist accepts an inline-code execution flag (-e for node/bun, -c for python3/deno), giving any logged-in user arbitrary OS-level code execution on the Lumiverse server. The route requires only requireAuth (not requireOwner). The server binds on all interfaces (::) and the host-header rebinding check is bypassed trivially by any HTTP client that sends Host: localhost: directly, making this exploitable from any machine with network access to the server port. This vulnerability is fixed in 0.9.7.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-44450 since 05/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

Upgrading to version 0.9.7 eliminates this vulnerability.

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Productinfo

Vendor

• prolix-oc

Name

• Lumiverse

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3
• 0.9.4
• 0.9.5
• 0.9.6

Website

• Product: https://github.com/prolix-oc/Lumiverse/

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