CLSA-2026-1777548617 Fix CVE(s): CVE-2026-4519, CVE-2026-4786

SECURITY UPDATE: webbrowser.open accepts URLs with leading dashes - debian/patches/CVE-2026-4519-CVE-2026-4786.patch: reject URLs whose lstrip starts with '-' in Lib/webbrowser.py; also fix bypass via %action substitution in UnixBrowser.open. - CVE-2026-4519 - CVE-2026-4786...

python: Python: Command-line option injection in webbrowser.open() via crafted URLs

A flaw was found in Python. The webbrowser.open API, used to launch web browsers, does not properly sanitize input. This allows a remote attacker to craft a malicious URL containing leading dashes. When such a URL is opened, certain web browsers may interpret these dashes as command-line options,...

Linux Distros Unpatched Vulnerability : CVE-2026-4519

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...