CVE-2026-44444: critical vulnerability in prolix-oc Lumiverse
Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.4%
Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the Spindle extension build pipeline calls bun install without the --ignore-scripts flag before running the static backend safety scan (assertSafeBackendBundle). A malicious extension that ships a package.json with a preinstall, postinstall, or prepare lifecycle script achieves host-level code execution the moment an admin presses Install before any dist file is inspected. This vulnerability is fixed in 0.9.7.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
prolix-oc · LumiverseRelated CVEs — prolix-oc Lumiverse
In the same product, most dangerous first.
CVE-2026-44449CRITICALLumiverse: SMB `exists()` basename injection via smbclient `!cmd` escapeEPSS 0.5%CVE-2026-44450CRITICALLumiverse: RCE via MCP stdio argument injectionEPSS 0.4%CVE-2026-44451CRITICALLumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypassEPSS 0.2%CVE-2026-44443MEDIUMLumiverse: Sign-up nonce race condition allows unauthorized account registrationEPSS 0.1%