External Control of File Name or Path Affecting nicegui package, versions [,3.12.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-NICEGUI-16757863
- published19 May 2026
- disclosed18 May 2026
- creditdennyabrahamsinaga, Rohit Prasanth
Introduced: 18 May 2026
CVE-2026-45553 (opens in a new tab)How to fix?
Upgrade nicegui to version 3.12.0 or higher.
Overview
nicegui is a Create web-based user interfaces with Python. The nice way.
Affected versions of this package are vulnerable to External Control of File Name or Path via the prepare_content function. An attacker can access sensitive local files readable by the server by supplying specially crafted reStructuredText content that leverages Docutils directives such as include, csv-table with :file:, or raw with :file:.
Note: This is only exploitable if untrusted or user-controlled input is passed into ui.restructured_text().