Is CVE-2026-44450 actively exploited?

No active exploitation of CVE-2026-44450 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44450 be exploited remotely?

Yes. CVE-2026-44450 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44450?

CVE-2026-44450 has a CVSS score of 9.9 (CRITICAL).

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CRITICAL

CVE-2026-44450

CWE-88Published: May 26, 2026· Updated: May 27, 2026

9.9

CVSS v3.1

Official Description

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:<port> directly, making this exploitable from any machine with network access to the server port. This vulnerability is fixed in 0.9.7.

NVD Source

Risk Analysis

This critical vulnerability in Lumiverse allows any logged-in user to achieve arbitrary OS-level code execution on the server. The flaw stems from insufficient validation of arguments passed to child processes, enabling attackers to leverage inline-code execution flags. With a CVSS score of 9.9, this vulnerability presents an extremely high risk.

No public exploit is currently known for this vulnerability. The flaw is remotely exploitable due to its network attack vector and low attack complexity.

Recommended Action

Upgrade Lumiverse to version 0.9.7 or later to address this vulnerability. Ensure all arguments passed to child processes are strictly validated against an allowlist.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2026-44450 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.9.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.