CVE-2026-44444CWE-78

Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan

Critical · published May 26, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
51.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00665 · 51.2th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-26T20:01Z
EPSS history
Timeline
  • 26 MAY 20:01Z
    Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan
    cvelistv5