# nicegui (PyPI) vulnerabilities

Source: https://junglewise.ai/threats/technologies/nicegui  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nicegui.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 17 vulnerabilities in nicegui (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-21874, was published on 7 July 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 17 (0 critical, 0 exploited in the wild)

## About nicegui (PyPI)

NiceGUI is a Python-based framework for creating web-based user interfaces.

## Latest nicegui (PyPI) vulnerabilities

- [CVE-2026-21874: PYSEC-2026-1703 - NiceGUI has Redis connection leak via tab storage causes service degradation](https://junglewise.ai/threats/cve-2026-21874-nicegui-has-redis-connection-leak-via-tab-storage-causes-service) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2026-21873: PYSEC-2026-1702 - NiceGUI apps which use `ui.sub_pages` vulnerable to zero-click XSS](https://junglewise.ai/threats/cve-2026-21873-nicegui-apps-which-use-ui-sub-pages-vulnerable-to-zero-click-xss) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2026-21872: PYSEC-2026-1701 - NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links](https://junglewise.ai/threats/cve-2026-21872-nicegui-apps-are-vulnerable-to-xss-which-uses-ui-sub-pages-and) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2026-21871: PYSEC-2026-1698 - NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()](https://junglewise.ai/threats/cve-2026-21871-nicegui-is-vulnerable-to-xss-via-unescaped-url-in-ui-navigate) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2025-66469: PYSEC-2026-1697 - NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection](https://junglewise.ai/threats/cve-2025-66469-nicegui-reflected-xss-in-ui-add-css-ui-add-scss-and-ui-add-sass) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2025-53354: PYSEC-2026-1699 - NiceGUI has a Reflected XSS](https://junglewise.ai/threats/cve-2025-53354-nicegui-has-a-reflected-xss) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2025-21618: PYSEC-2026-1705 - NiceGUI On Air authentication issue](https://junglewise.ai/threats/cve-2025-21618-nicegui-on-air-authentication-issue) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2024-32005: PYSEC-2026-1704 - NiceGUI allows potential access to local file system](https://junglewise.ai/threats/cve-2024-32005-nicegui-allows-potential-access-to-local-file-system) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2026-45554: NiceGUI denial of service via log exhaustion in static asset routes](https://junglewise.ai/threats/cve-2026-45554-nicegui-denial-of-service-via-log-exhaustion-in-static-asset) (medium, CVSS 5.3, published 2 Jun 2026)
- [CVE-2026-45553: NiceGUI local file disclosure in ui.restructured_text](https://junglewise.ai/threats/cve-2026-45553-nicegui-local-file-disclosure-in-ui-restructured-text) (high, CVSS 7.5, published 2 Jun 2026)
- [CVE-2026-39844: Zauberzeug NiceGUI path traversal in file upload on Windows](https://junglewise.ai/threats/cve-2026-39844-zauberzeug-nicegui-path-traversal-in-file-upload-on-windows) (medium, CVSS 5.9, published 8 Apr 2026)
- [CVE-2026-33332: NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion](https://junglewise.ai/threats/cve-2026-33332-nicegui-s-unvalidated-chunk-size-parameter-in-media-routes-can) (low, CVSS 3.1, published 24 Mar 2026)
- [CVE-2026-27156: PYSEC-2026-2232 - NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute…](https://junglewise.ai/threats/cve-2026-27156-nicegui-vulnerable-to-xss-via-code-injection-during-client-side) (low, CVSS 3.1, published 24 Feb 2026)
- [CVE-2026-25516: NiceGUI's XSS vulnerability in ui.markdown() allows arbitrary JavaScript execution through unsanitized HTML content](https://junglewise.ai/threats/cve-2026-25516-nicegui-s-xss-vulnerability-in-ui-markdown-allows-arbitrary) (low, CVSS 3.1, published 6 Feb 2026)
- [CVE-2026-25732: NiceGUI path traversal in FileUpload.save](https://junglewise.ai/threats/cve-2026-25732-nicegui-path-traversal-in-fileupload-save) (high, CVSS 7.5, published 5 Feb 2026)
- [CVE-2025-66645: PYSEC-2026-1700 - NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read](https://junglewise.ai/threats/cve-2025-66645-nicegui-has-a-path-traversal-in-app-add-media-files-allows) (high, CVSS 7.5, published 9 Dec 2025)
- [CVE-2025-66470: PYSEC-2026-1696 - NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content](https://junglewise.ai/threats/cve-2025-66470-nicegui-stored-reflected-xss-in-ui-interactive-image-via) (medium, CVSS 6.1, published 9 Dec 2025)

## Most severe nicegui (PyPI) vulnerabilities

- [CVE-2026-25732: NiceGUI path traversal in FileUpload.save](https://junglewise.ai/threats/cve-2026-25732-nicegui-path-traversal-in-fileupload-save) (high, CVSS 7.5, published 5 Feb 2026)
- [CVE-2025-66645: PYSEC-2026-1700 - NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read](https://junglewise.ai/threats/cve-2025-66645-nicegui-has-a-path-traversal-in-app-add-media-files-allows) (high, CVSS 7.5, published 9 Dec 2025)
- [CVE-2026-45553: NiceGUI local file disclosure in ui.restructured_text](https://junglewise.ai/threats/cve-2026-45553-nicegui-local-file-disclosure-in-ui-restructured-text) (high, CVSS 7.5, published 2 Jun 2026)
- [CVE-2025-66470: PYSEC-2026-1696 - NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content](https://junglewise.ai/threats/cve-2025-66470-nicegui-stored-reflected-xss-in-ui-interactive-image-via) (medium, CVSS 6.1, published 9 Dec 2025)
- [CVE-2026-39844: Zauberzeug NiceGUI path traversal in file upload on Windows](https://junglewise.ai/threats/cve-2026-39844-zauberzeug-nicegui-path-traversal-in-file-upload-on-windows) (medium, CVSS 5.9, published 8 Apr 2026)
- [CVE-2026-45554: NiceGUI denial of service via log exhaustion in static asset routes](https://junglewise.ai/threats/cve-2026-45554-nicegui-denial-of-service-via-log-exhaustion-in-static-asset) (medium, CVSS 5.3, published 2 Jun 2026)
- [CVE-2024-32005: PYSEC-2026-1704 - NiceGUI allows potential access to local file system](https://junglewise.ai/threats/cve-2024-32005-nicegui-allows-potential-access-to-local-file-system) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2026-33332: NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion](https://junglewise.ai/threats/cve-2026-33332-nicegui-s-unvalidated-chunk-size-parameter-in-media-routes-can) (low, CVSS 3.1, published 24 Mar 2026)
- [CVE-2026-21874: PYSEC-2026-1703 - NiceGUI has Redis connection leak via tab storage causes service degradation](https://junglewise.ai/threats/cve-2026-21874-nicegui-has-redis-connection-leak-via-tab-storage-causes-service) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2025-21618: PYSEC-2026-1705 - NiceGUI On Air authentication issue](https://junglewise.ai/threats/cve-2025-21618-nicegui-on-air-authentication-issue) (low, CVSS 3.1, published 7 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other PyPI technologies

- [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities
- [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities
- [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities
- [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities
- [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities
- [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities
- [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities
- [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities
- [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities
- [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities
- [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities
- [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "nicegui (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/nicegui, 13 November 2026.