CVE-2026-21874
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2026-21874
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21874.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-21874
- Aliases
- Published
- 2026-01-08T09:50:47.247Z
- Modified
- 2026-01-13T20:11:01.434900Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- NiceGUI has Redis connection leak via tab storage causes service degradation
- Details
-
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.
- Database specific
{ "cwe_ids": [ "CWE-772" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21874.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21874.json
- https://github.com/zauberzeug/nicegui/commit/6c52eb2c90c4b67387c025b29646b4bc1578eb83
- https://github.com/zauberzeug/nicegui/releases/tag/v3.5.0
- https://github.com/zauberzeug/nicegui/security/advisories/GHSA-mp55-g7pj-rvm2
- https://nvd.nist.gov/vuln/detail/CVE-2026-21874
Affected packages
Git / github.com/zauberzeug/nicegui
Affected versions
v2.*
v2.10.0
v2.10.1
v2.11.0
v2.11.1
v2.12.0
v2.12.1
v2.13.0
v2.14.0
v2.14.1
v2.15.0
v2.16.0
v2.16.1
v2.17.0
v2.18.0
v2.19.0
v2.20.0
v2.21.0
v2.21.1
v2.22.0
v2.22.1
v2.22.2
v2.23.0
v2.23.1
v2.23.2
v2.23.3
v2.24.0
v2.24.1
v2.24.2
v3.*
v3.0.0
v3.0.0rc1
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.1.0
v3.2.0
v3.3.0
v3.3.1
v3.4.0
v3.4.1