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CVE-2026-44449— Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape

CVSS 9.1 · Critical EPSS 0.08% · P23

Affected Version Matrix 1

VendorProductVersion RangeStatus
prolix-ocLumiverse< 0.9.7affected
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I. Basic Information for CVE-2026-44449

Vulnerability Information
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Vulnerability Title
Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape
Source: NVD (National Vulnerability Database)
Vulnerability Description
Lumiverse is a full-featured AI chat application. Prior to 0.9.7, when the primary toSmbPath(fullPath) call throws, the method falls back to a dirname/basename split and only validates the directory prefix. The basename is concatenated directly into the smbclient -c script without validation. smbclient interprets ; as a subcommand separator and !cmd as a local-shell escape that runs cmd on the host. A path whose directory component is clean but whose basename contains "; !<cmd>; echo " achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
参数注入或修改
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
prolix-ocLumiverse < 0.9.7 -

II. Public POCs for CVE-2026-44449

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III. Intelligence Information for CVE-2026-44449

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Vendor Advisories for CVE-2026-44449 (1)

Same Patch Batch · prolix-oc · 2026-05-26 · 5 CVEs total

CVE-2026-444509.9 CRITICALLumiverse: RCE via MCP stdio argument injection
CVE-2026-444519.3 CRITICALLumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypass
CVE-2026-444449.1 CRITICALLumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan
CVE-2026-444434.8 MEDIUMLumiverse: Sign-up nonce race condition allows unauthorized account registration

IV. Related Vulnerabilities

Same product: Lumiverse
Same vendor: prolix-oc
Same weakness: CWE-88

V. Comments for CVE-2026-44449

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