CVE-2025-21618— NiceGUI On Air authentication issue
Quick assessment
Affected
zauberzeug nicegui
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.
NiceGUI是NiceGUI开源的一个易于使用、基于 Python 的 UI 框架。 NiceGUI 2.9.1之前版本存在授权问题漏洞，该漏洞源于使用 NiceGUI 进行身份验证可让用户在所有浏览器（包括隐身模式的浏览器）上登录。
Possible ATT&CK Techniques 1 AI
T1078.003 · Local Accounts
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I. Basic Information for CVE-2025-21618
Vulnerability Information
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Vulnerability Title
NiceGUI On Air authentication issue
Source: CVE Program / CVE List V5
Vulnerability Description
NiceGUI is an easy-to-use, Python-based UI framework. Prior to 2.9.1, authenticating with NiceGUI logged in the user for all browsers, including browsers in incognito mode. This vulnerability is fixed in 2.9.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
NiceGUI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NiceGUI是NiceGUI开源的一个易于使用、基于 Python 的 UI 框架。 NiceGUI 2.9.1之前版本存在授权问题漏洞，该漏洞源于使用 NiceGUI 进行身份验证可让用户在所有浏览器（包括隐身模式的浏览器）上登录。
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 |
|---|---|---|---|---|
| zauberzeug | nicegui | < 2.9.1 | - |
|
II. Public POCs for CVE-2025-21618
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
Qwen3.6-35B-A3B
· 6491 chars
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III. Intelligence Information for CVE-2025-21618
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Patches & Fixes for CVE-2025-21618 (1)
-
Merge commit from fork · zauberzeug/nicegui@1621a4b · GitHub x_refsource_MISC
Vendor Advisories for CVE-2025-21618 (1)
IV. Related Vulnerabilities
Same product: nicegui
-
CVE-2026-45554
NiceGUI: Unauthenticated log-flood DoS via trailing slash on -
CVE-2026-45553
NiceGUI: Local file disclosure via Docutils file insertion i -
CVE-2026-39844
NiceGUI has a Path Traversal in NiceGUI Upload Filename on W -
CVE-2026-33332
NiceGUI's unvalidated chunk size parameter in media routes c -
CVE-2026-27156
NiceGUI has XSS via Code Injection
Same vendor: zauberzeug
-
CVE-2026-45554
NiceGUI: Unauthenticated log-flood DoS via trailing slash on -
CVE-2026-45553
NiceGUI: Local file disclosure via Docutils file insertion i -
CVE-2026-39844
NiceGUI has a Path Traversal in NiceGUI Upload Filename on W -
CVE-2026-33332
NiceGUI's unvalidated chunk size parameter in media routes c -
CVE-2026-27156
NiceGUI has XSS via Code Injection
Same weakness: CWE-287
-
CVE-2026-55533
PraisonAI: Authentication fail-open in Recipe server allows -
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liketrek TREK OIDC Service oidcService.ts findOrCreateUser i -
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liketrek TREK Pre-2FA mfa_token authService.ts loginUser imp -
CVE-2026-53561
Apache Hive: Unauthenticated authentication bypass in HiveSe -
CVE-2026-65633
Purpose-limited JWT accepted as full bearer authentication i
V. Comments for CVE-2025-21618
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