CVE-2026-44450
CriticalCVSS 9.9Exploitation Probability (EPSS)
Low risk30th percentile - higher than 30% of all known CVEs
Summary
Vulnerability in Lumiverse (AI chat app) before version 0.9.7 allows a logged-in user to execute arbitrary code on the server via the MCP server creation endpoint. The attacker can use -e or -c flags in args, leading to remote code execution. The server listens on all interfaces and host-header rebinding protection is easily bypassed.
Risk Assessment
Risk is critical – an attacker can gain full control of the server, execute arbitrary code, and potentially steal data or install malware.
Recommendation
Update Lumiverse to version 0.9.7 or later. Restrict server access to trusted networks and enforce strong authentication.
Original NVD description (English source)
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.