PSF-2026-14

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...

CVE-2026-4519 webbrowser.open() allows leading dashes in URLs

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...

Python -- The webbrowser.open() API allows leading dashes

https://github.com/python/cpython/pull/143931 reports: 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...

CPython 安全漏洞

CPython is a Python interpreter implemented in C language by the Python Foundation. CPython has a security vulnerability that stems from the webbrowser.open API accepting leading dashes in URLs. This could allow certain web browsers to treat these URLs as command-line options, resulting in securi...

PT-2026-26624

Name of the Vulnerable Software and Affected Versions CPython affected versions not specified Description The webbrowser.open API accepted leading dashes in URLs, which could be interpreted as command line options by certain web browsers. This behavior has been modified to reject leading dashes...