CVE-2026-21873
Zero-click XSS in all NiceGUI apps which uses `ui.sub_pages`
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 7.2EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
08 ene 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
NiceGUI is a Python-based UI framework. From versions 2.22.0 to 3.4.1, an unsafe implementation in the pushstate event listener used by ui.sub_pages allows an attacker to manipulate the fragment identifier of the URL, which they can do despite being cross-site, using an iframe. This issue has been patched in version 3.5.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Productos afectados
zauberzeug · nicegui¿Quieres saber si tu infraestructura está expuesta a esto?
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