CVE-2026-4519highCWE-20CWE-88

CVE-2026-4519: fallo de gravedad alta en Python Software Foundation CPython

webbrowser.open() allows leading dashes in URLs

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear CPython+ Monitorear pypy3

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7epss 0.3%
The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
Python Software Foundation · CPython
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