Directory Traversal

Overview nicegui is a Create web-based user interfaces with Python. The nice way. Affected versions of this package are vulnerable to Directory Traversal via improper sanitization of uploaded filenames in the uploadfiles.py. An attacker can overwrite arbitrary files outside the intended upload...

EUVD-2026-20610

NiceGUI: Upload filename sanitization bypass via backslashes allows path traversal on Windows...

GHSA-W8WV-VFPC-HW2W NiceGUI: Upload filename sanitization bypass via backslashes allows path traversal on Windows

Summary The upload filename sanitization introduced in GHSA-9ffm-fxg3-xrhh uses PurePosixPathfilename.name to strip path components. Since PurePosixPath only recognizes forward slashes / as path separators, an attacker can bypass this sanitization on Windows by using backslashes \ in the upload...

NiceGUI: Upload filename sanitization bypass via backslashes allows path traversal on Windows

Summary The upload filename sanitization introduced in GHSA-9ffm-fxg3-xrhh uses PurePosixPathfilename.name to strip path components. Since PurePosixPath only recognizes forward slashes / as path separators, an attacker can bypass this sanitization on Windows by using backslashes \ in the upload...

CVE-2026-39844: Improper Limitation of a Pathname to a Restricted Directory

NiceGUI is a Python-based UI framework. Prior to 3.10.0, Since PurePosixPath only recognizes forward slashes / as path separators, an attacker can bypass this sanitization on Windows by using backslashes \ in the upload filename. Applications that construct file paths using file.name a pattern...

NiceGUI 路径遍历漏洞

NiceGUI is an easy-to-use, Python-based UI framework developed under the open source license. Versions of NiceGUI prior to 3.10.0 contained a path traversal vulnerability. This vulnerability stemmed from an inability to bypass path cleaning, which could lead to arbitrary file writing on Windows...

CVE-2026-33332

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

PYSEC-2026-2233

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

PYSEC-2026-2233

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

CVE-2026-33332

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

EUVD-2026-14179

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

CVE-2026-33332 NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

CVE-2026-33332 NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

CVE-2026-33332

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

CVE-2026-33332

CVE-2026-33332 affects NiceGUI prior to v3.9.0. The media routes app.add_media_file() and app.add_media_files() 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 a...

CVE-2026-33332 NiceGUI's unvalidated chunk size parameter in media routes can cause memory exhaustion

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

NiceGUI 安全漏洞

NiceGUI is an easy-to-use, Python-based UI framework developed under the NiceGUI open source project. Versions of NiceGUI prior to 3.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the media routing functions in app.addmediafile and app.addmediafiles, which allowed...

CVE-2026-33332: Improper Input Validation

NiceGUI is a Python-based UI framework. Prior to version 3.9.0, 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...

GHSA-W5G8-5849-VJ76 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...

Improper Validation of Specified Quantity in Input

Overview nicegui is a Create web-based user interfaces with Python. The nice way. Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input in the chunksize parameter in app.addmediafile and app.addmediafiles media routes. An attacker can cause excessi...