NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion

Summary NiceGUI's app.addmediafile and app.addmediafiles media routes accept a user-controlled query parameter that influences how files are read during streaming. The parameter is passed to the range-response implementation without validation, allowing an attacker to bypass chunked streaming and...

PT-2026-26484

Name of the Vulnerable Software and Affected Versions NiceGUI versions prior to 3.9.0 Description NiceGUI’s app.add media file and app.add media files functions are susceptible to a flaw where a user-controlled query parameter, passed to the range-response implementation without validation, can...

CVE-2026-27156

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

GHSA-78QV-3MPX-9CQQ NiceGUI vulnerable to XSS via Code Injection during client-side element function execution

Summary Several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input is passed as the method name, an attacker can inject...

NiceGUI vulnerable to XSS via Code Injection during client-side element function execution

Summary Several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input is passed as the method name, an attacker can inject...

CVE-2026-27156

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

PYSEC-2026-2232

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

PYSEC-2026-2232

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

CVE-2026-27156 NiceGUI has XSS via Code Injection

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

CVE-2026-27156 NiceGUI has XSS via Code Injection

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

CVE-2026-27156

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

CVE-2026-27156 NiceGUI has XSS via Code Injection

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

CVE-2026-27156

NiceGUI (Python) before version 3.8.0 is vulnerable to XSS via code injection in client-side runMethod-related APIs (Element.run_method, AgGrid.run_grid_method, EChart.run_chart_method, etc.) due to eval fallback and unsafe string interpolation of method names. The issue allows attacker-controlle...

NiceGUI 跨站脚本漏洞

NiceGUI is an easy-to-use, Python-based UI framework developed under the open source license. Versions of NiceGUI prior to 3.8.0 contained a cross-site scripting vulnerability. This vulnerability stemmed from the use of eval in multiple client APIs, and incorrect escaping of method names, which...

CVE-2026-27156: Improper Neutralization of Input During Web Page Generation

NiceGUI is a Python-based UI framework. Prior to version 3.8.0, several NiceGUI APIs that execute methods on client-side elements Element.runmethod, AgGrid.rungridmethod, EChart.runchartmethod, and others use an eval fallback in the JavaScript-side runMethod function. When user-controlled input i...

PT-2026-21771

Name of the Vulnerable Software and Affected Versions NiceGUI versions prior to 3.8.0 Description NiceGUI APIs, including Element.run method, AgGrid.run grid method, EChart.run chart method, and others, utilized an eval fallback within the JavaScript-side runMethod function. This allowed for...

CVE-2026-25516

NiceGUI is a Python-based UI framework. The ui.markdown component uses the markdown2 library to convert markdown content to HTML, which is then rendered via innerHTML. By default, markdown2 allows raw HTML to pass through unchanged. This means that if an application renders user-controlled conten...

CVE-2026-25732

NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI's FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOADDIR / file.name. Malicious filenames containing ../ sequences allow attackers to...

PYSEC-2026-95

NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI's FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOADDIR / file.name. Malicious filenames containing ../ sequences allow attackers to...

CVE-2026-25732

NiceGUI is a Python-based UI framework. Prior to 3.7.0, NiceGUI's FileUpload.name property exposes client-supplied filename metadata without sanitization, enabling path traversal when developers use the pattern UPLOADDIR / file.name. Malicious filenames containing ../ sequences allow attackers to...