CVE-2025-66470

NiceGUI XSS Scanner - CVE-2025-66470 📸 スクリーンショット NiceGUIのui.interactiveimageコンポーネントにおけるCVE-2025-66470（XSS脆弱性）を検出するための高速でシンプルなスキャナーです。 🔍 脆弱性の詳細 フィールド| 値 ---|--- CVE| CVE-2025-66470 GHSA| GHSA-2m4f-cg75-76w2 コンポーネント| ui.interactiveimage 影響を受けるバージョン| NiceGUI ≤ 3.3.1 修正バージョン| NiceGUI 3.4.0+ タイプ|...

CVE-2026-25732-NiceGUI-3.6.1

著者: Mohammed Idrees Banyamer 連絡先: Instagram: @banyamersecurity GitHub: https://github.com/mbanyamer CVE-2026-25732 — NiceGUI FileUpload におけるパストラバーサル → 任意ファイル書き込み エクスプロイトタイトル: NiceGUI FileUpload のパストラバーサルによる任意ファイル書き込み 日付: 2025-06-06 テスト環境: NiceGUI ≤ 3.6.1 Linux / Windows 上の Python 3.8 – 3.12...

PYSEC-2026-2680 NiceGUI: Unauthenticated log-volume denial of service in dynamic resource routes

Summary Two FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside Starlette's FileResponse, which Uvicorn writes to the server log...

NiceGUI: Unauthenticated log-volume denial of service in dynamic resource routes

SummaryTwo FastAPI routes that serve per-component static assets in NiceGUI accept a sub-path parameter that may resolve to a directory rather than a file. Requests that resolve to a directory raise an unhandled RuntimeError inside Starlette's FileResponse, which Uvicorn writes to the server log ...

NiceGUI: Local file disclosure via Docutils file insertion in ui.restructured_text()

Summaryui.restructuredtext renders reStructuredText server-side with Docutils without disabling file insertion directives.When a NiceGUI application passes attacker-controlled content to ui.restructuredtext, an attacker can use standard Docutils directives include, csv-table with :file:, raw with...

PYSEC-2026-2679 NiceGUI: Local file disclosure via Docutils file insertion in ui.restructured_text()

Summary ui.restructuredtext renders reStructuredText server-side with Docutils without disabling file insertion directives. When a NiceGUI application passes attacker-controlled content to ui.restructuredtext, an attacker can use standard Docutils directives include, csv-table with :file:, raw wi...

NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()

SummaryXSS risk exists in NiceGUI when developers pass attacker-controlled strings into ui.navigate.history.push or ui.navigate.history.replace. These helpers are documented as History API wrappers for updating the browser URL without page reload. However, if the URL argument is embedded into...

PYSEC-2026-1703 NiceGUI has Redis connection leak via tab storage causes service degradation

Summary An unauthenticated attacker can exhaust Redis connections by repeatedly opening and closing browser tabs on any NiceGUI application using Redis-backed storage. Connections are never released, leading to service degradation when Redis hits its connection limit. NiceGUI continues accepting...

PYSEC-2026-1698 NiceGUI is vulnerable to XSS via Unescaped URL in ui.navigate.history.push() / replace()

Summary XSS risk exists in NiceGUI when developers pass attacker-controlled strings into ui.navigate.history.push or ui.navigate.history.replace. These helpers are documented as History API wrappers for updating the browser URL without page reload. However, if the URL argument is embedded into...

PYSEC-2026-1701 NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links

Summary An unsafe implementation in the click event listener used by ui.subpages, combined with attacker-controlled link rendering on the page, causes an XSS when the user actively clicks on the link. Details 1. On click, eventually subpagesnavigate event is emitted...

NiceGUI has Redis connection leak via tab storage causes service degradation

SummaryAn unauthenticated attacker can exhaust Redis connections by repeatedly opening and closing browser tabs on any NiceGUI application using Redis-backed storage. Connections are never released, leading to service degradation when Redis hits its connection limit.NiceGUI continues accepting ne...

NiceGUI apps are vulnerable to XSS which uses `ui.sub_pages` and render arbitrary user-provided links

SummaryAn unsafe implementation in the click event listener used by ui.subpages, combined with attacker-controlled link rendering on the page, causes an XSS when the user actively clicks on the link. Details1. On click, eventually subpagesnavigate event is...

PYSEC-2026-1702 NiceGUI apps which use `ui.sub_pages` vulnerable to zero-click XSS

Summary An unsafe implementation in the pushstate event listener used by ui.subpages allows an attacker to manipulate the fragment identifier of the URL, which they can do despite being cross-site, using an iframe. Details The problem is traced as follows: 1. On pushstate, handleStateEvent is...

NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read

SummaryA directory traversal vulnerability in NiceGUI's App.addmediafiles allows a remote attacker to read arbitrary files on the server filesystem. DetailsHello, I am Seungbin Yang, a university student studying cybersecurity. While reviewing the source code of the repository, I discovered a...

PYSEC-2026-1700 NiceGUI has a path traversal in app.add_media_files() allows arbitrary file read

Summary A directory traversal vulnerability in NiceGUI's App.addmediafiles allows a remote attacker to read arbitrary files on the server filesystem. Details Hello, I am Seungbin Yang, a university student studying cybersecurity. While reviewing the source code of the repository, I discovered a...

PYSEC-2026-1697 NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection

Summary A Cross-Site Scripting XSS vulnerability exists in ui.addcss, ui.addscss, and ui.addsass functions in NiceGUI v3.3.1 and earlier. These functions allow developers to inject styles dynamically. However, they lack proper sanitization or encoding for the JavaScript context they generate. An...

NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content

SummaryA Cross-Site Scripting XSS vulnerability exists in the ui.interactiveimage component of NiceGUI v3.3.1 and earlier. The component renders SVG content using Vue's v-html directive without any sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG tag...

NiceGUI Reflected XSS in ui.add_css, ui.add_scss, and ui.add_sass via Style Injection

SummaryA Cross-Site Scripting XSS vulnerability exists in ui.addcss, ui.addscss, and ui.addsass functions in NiceGUI v3.3.1 and earlier.These functions allow developers to inject styles dynamically. However, they lack proper sanitization or encoding for the JavaScript context they generate. An...

PYSEC-2026-1696 NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content

Summary A Cross-Site Scripting XSS vulnerability exists in the ui.interactiveimage component of NiceGUI v3.3.1 and earlier. The component renders SVG content using Vue's v-html directive without any sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG tag. Detail...

PYSEC-2026-1699 NiceGUI has a Reflected XSS

Summary A Cross-Site Scripting XSS risk exists in NiceGUI when developers render unescaped user input into the DOM using ui.html. Before version 3.0, NiceGUI does not enforce HTML or JavaScript sanitization, so applications that directly combine components like ui.input with ui.html without...