CVE-2026-39844

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...

CVE-2026-45553

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45553

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554 NiceGUI: Unauthenticated log-flood DoS via trailing slash on ESM and per-component resource routes

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554 NiceGUI: Unauthenticated log-flood DoS via trailing slash on ESM and per-component resource routes

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554 NiceGUI: Unauthenticated log-flood DoS via trailing slash on ESM and per-component resource routes

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45554

NiceGUI is a Python UI framework. Before version 3.12.0, two FastAPI routes serving per-component static assets accept a sub-path that can resolve to a directory, causing an unhandled RuntimeError inside Starlette’s FileResponse. Uvicorn logs the full traceback, and since these routes require no ...

ai-plays-jackbox (>=0.0.1, <=0.3.2), aignostics (>=0.2.200, <=0.2.226) +58 more potentially affected by CVE-2026-45554 via nicegui (>=0.5.9, <=3.10.0)

nicegui PYPI version =0.5.9, =0.0.1, =0.2.200, =0.0.0, =0.1.0, =0.1.3, =0.1.0, =1.1.3, =0.6.7, =1.0.0, =1.2.0, =1.23.0 and more Source cves: CVE-2026-45554 Source advisory: MEND:CVE-2026-45554...

EUVD-2026-33965

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45553 NiceGUI: Local file disclosure via Docutils file insertion in ui.restructured_text()

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45553

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45553 NiceGUI: Local file disclosure via Docutils file insertion in ui.restructured_text()

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

CVE-2026-45553

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

ai-plays-jackbox (>=0.0.1, <=0.3.2), aignostics (>=0.2.200, <=0.2.226) +58 more potentially affected by CVE-2026-45553 via nicegui (>=0.5.9, <=3.10.0)

nicegui PYPI version =0.5.9, =0.0.1, =0.2.200, =0.0.0, =0.1.0, =0.1.3, =0.1.0, =1.1.3, =0.6.7, =1.0.0, =1.2.0, =1.23.0 and more Source cves: CVE-2026-45553 Source advisory: MEND:CVE-2026-45553...

EUVD-2026-33963

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...

NiceGUI security vulnerability

NiceGUI is an easy-to-use, Python-based UI framework developed under the open source license. Versions of NiceGUI prior to 3.12.0 contained a security vulnerability. This vulnerability stemmed from two FastAPI routes that allowed subpath parameters to be resolved into directories, potentially...

CVE-2026-45554: Uncaught Exception

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, 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...