NiceGUI On Air authentication issue
Priority HIGH 72CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Fixed nicegui (zauberzeug): 2.9.1nicegui (PyPI): 2.9.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| zauberzeug | nicegui | before 2.9.1 | 2.9.1 | Patch available | CNA |
| — | nicegui (PyPI) | before 2.9.1 | 2.9.1 | Patch available | GHSA-v6jv-p6r8-j78w |
- nicegui Vendorzauberzeug Affected before 2.9.1 Fixed in 2.9.1 Patch available CNA
- nicegui (PyPI) Vendor— Affected before 2.9.1 Fixed in 2.9.1 Patch available GHSA-v6jv-p6r8-j78w
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zauberzeug:nicegui:*:*:*:*:*:*:*:* | — | — | zauberzeug |
- cpe:2.3:a:zauberzeug:nicegui:*:*:*:*:*:*:*:* Versions — — ·zauberzeug
Remediation
- Fix · CNA nicegui (zauberzeug) Fixed in 2.9.1
- Fix · GHSA-v6jv-p6r8-j78w nicegui (PyPI) Fixed in 2.9.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-21618
- 2026-10-03 Alias added: GHSA-v6jv-p6r8-j78w
References
More zauberzeug vulnerabilities
- TI-2024-21104 Local File Inclusion in NiceGUI leaflet component CVSS 3.1HIGH 8.2
- TI-2025-41029 NiceGUI Path Traversal Vulnerability in app.add_media_files() Allows Arbitrary File Reading CVSS 3.1HIGH 7.5
- TI-2026-17574 Zero-click XSS in all NiceGUI apps which uses `ui.sub_pages` CVSS 3.1HIGH 7.2
- TI-2026-17575 NiceGUI has Redis connection leak via tab storage causes service degradation CVSS 3.1MEDIUM 5.3
- TI-2026-17573 NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links CVSS 3.1MEDIUM 6.1
- TI-2026-17572 NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace() CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-21618 · CVE Program
- CVE-2025-21618 · NVD
- FIRST EPSS
- GHSA-v6jv-p6r8-j78w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences