CVE-2026-45553: NiceGUI is a Python-based UI framework. Prior to version 3.12.0, ui.restructured_text() renders reStructuredText server-side with Docutils without disabling…

PriorityP347high7.5CVSS 3.1

AVNACLPRNUINSUCHINAN

EPSS

0.26%

16.7th percentile

NiceGUI is a Python-based UI framework. Prior to version 3.12.0, ui.restructured_text() renders reStructuredText server-side with Docutils without disabling file insertion directives. When a NiceGUI application passes attacker-controlled content to ui.restructured_text(), an attacker can use standard Docutils directives (include, csv-table with :file:, raw with :file:) to read local files readable by the NiceGUI server process. Applications that only pass trusted static strings to ui.restructured_text() are not affected. This issue has been patched in version 3.12.0.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
zauberzeug	nicegui	< 3.12.0	3.12.0
zauberzeug	nicegui	>= 0 < 3.12.0	3.12.0

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