CVE-2026-4519
Python Software Foundation CPython, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support
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
- 7
- EPSS
- 0.31% 23.1% percentile
- CISA KEV
- Not listed
- Published
- 2026.03.21