Vulnerability · Published May 26, 2026 · Assigned by GitHub_M

CVE-2026-44444Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan

Critical 9.1

In plain English

A critical-severity OS command injection in Lumiverse from prolix-oc. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.4%top 69.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
prolix-oc	Lumiverse	< 0.9.7

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-8x98-3wjp-pmj9 x_refsource_CONFIRM