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

Quick assessment

Affected
prolix-oc Lumiverse
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lumiverse是Prolix OCs个人开发者的一个全功能AI聊天应用套件。 Lumiverse 0.9.7之前版本存在参数注入漏洞，该漏洞源于toSmbPath()调用失败时回退到dirname/basename分割且仅验证目录前缀，basename直接拼接到smbclient -c脚本中未验证，smbclient将解释为子命令分隔符且!cmd作为本地shell转义，路径中basename包含 <cmd> echo 可实现任意命令执行。

CVSS 9.1 · Critical EPSS 0.86% · P57

Affected Version Matrix 1

VendorProduct Version RangeStatus
prolix-oc Lumiverse < 0.9.7 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Lumiverse 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lumiverse是Prolix OCs个人开发者的一个全功能AI聊天应用套件。 Lumiverse 0.9.7之前版本存在参数注入漏洞，该漏洞源于toSmbPath()调用失败时回退到dirname/basename分割且仅验证目录前缀，basename直接拼接到smbclient -c脚本中未验证，smbclient将解释为子命令分隔符且!cmd作为本地shell转义，路径中basename包含 <cmd> echo 可实现任意命令执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
prolix-oc Lumiverse < 0.9.7 -

II. Public POCs for CVE-2026-44449

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10687 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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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-2026-44450 9.9 CRITICAL Lumiverse: RCE via MCP stdio argument injection
CVE-2026-44451 9.3 CRITICAL Lumiverse: TSX component sandbox escape via DOM ref and string-split identifier bypass
CVE-2026-44444 9.1 CRITICAL Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan
CVE-2026-44443 4.8 MEDIUM Lumiverse: 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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