Description
NiceGUI is a Python-based UI framework. Prior to version 3.9.0, NiceGUI's app.add_media_file() and app.add_media_files() 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 force the server to load entire files into memory at once. With large media files and concurrent requests, this can lead to excessive memory consumption, degraded performance, or denial of service. This issue has been patched in version 3.9.0.
Problem types
CWE-20: Improper Input Validation
CWE-770: Allocation of Resources Without Limits or Throttling
Product status
References
github.com/...icegui/security/advisories/GHSA-w5g8-5849-vj76
github.com/...ommit/9026962b8c4f3f225c98b2fbc35aa6b60cb3495b
github.com/zauberzeug/nicegui/releases/tag/v3.9.0