Description
NiceGUI is a Python-based UI framework. From versions v2.10.0 to 3.4.1, an unauthenticated attacker can exhaust Redis connections by repeatedly opening and closing browser tabs on any NiceGUI application using Redis-backed storage. Connections are never released, leading to service degradation when Redis hits its connection limit. NiceGUI continues accepting new connections - errors are logged but the app stays up with broken storage functionality. This issue has been patched in version 3.5.0.
References (3)
Scores
CVSS v3
5.3
EPSS
0.0003
EPSS Percentile
7.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-772
Status
published
Products (2)
pypi/nicegui
2.10.0 - 3.5.0PyPI
zauberzeug/nicegui
2.10.0 - 3.5.0
Published
Jan 08, 2026
Tracked Since
Feb 18, 2026