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CVE-2026-44443— Lumiverse: Sign-up nonce race condition allows unauthorized account registration

Quick assessment

Affected
prolix-oc Lumiverse
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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之前版本存在竞争条件问题漏洞，该漏洞源于consumeNonce()仅检查模块级变量是否设置且未过期，未验证HTTP请求中的任何值或将nonce绑定到管理员会话，攻击者可在管理员创建用户时竞争10秒窗口注册未授权账户。

CVSS 4.8 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
prolix-oc Lumiverse < 0.9.7 affected
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I. Basic Information for CVE-2026-44443

Vulnerability Information
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Vulnerability Title
Lumiverse: Sign-up nonce race condition allows unauthorized account registration
Source: CVE Program / CVE List V5
Vulnerability Description
Lumiverse is a full-featured AI chat application. Prior to 0.9.7, consumeNonce() only checks that the module-level variable is set and unexpired. It does not validate any value from the incoming HTTP request or bind the nonce to the admin's session. If the admin's auth.api.signUpEmail() call fails before the before hook fires (e.g. BetterAuth rejects a duplicate email at the validation layer), the nonce is set but never consumed. Any POST /api/auth/sign-up/email request that arrives during the remaining window registers successfully regardless of who sent it. An attacker who can observe or predict when the admin is creating users (must be a dupplicate user) can race the 10-second window to register an unauthorized account. This vulnerability is fixed in 0.9.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Lumiverse 竞争条件问题漏洞
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之前版本存在竞争条件问题漏洞，该漏洞源于consumeNonce()仅检查模块级变量是否设置且未过期，未验证HTTP请求中的任何值或将nonce绑定到管理员会话，攻击者可在管理员创建用户时竞争10秒窗口注册未授权账户。
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-2026-44443

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III. Intelligence Information for CVE-2026-44443

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Vendor Advisories for CVE-2026-44443 (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-2026-44449 9.1 CRITICAL Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape
CVE-2026-44444 9.1 CRITICAL Lumiverse: Spindle extension install runs untrusted lifecycle scripts before security scan

IV. Related Vulnerabilities

Same product: Lumiverse
Same vendor: prolix-oc
Same weakness: CWE-362

V. Comments for CVE-2026-44443

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