Security Advisory

CVE-2026-21874

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-01-08 09:50:47

Last updated 2026-01-08 14:43:50

Assigner GitHub_M

CVSS score 5.3

State PUBLISHED

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.

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