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CVE-2026-4519
Published: Mar 20, 2026
Modified: Apr 13, 2026
PUBLISHED
Description
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().
| Vendor | Product | Versions |
|---|---|---|
Python Software Foundation | CPython | affected 0 - < 3.13.13affected 3.14.0 - < 3.14.4affected 3.15.0a1 - < 3.15.0a8 |
References
https://github.com/python/cpython/issues/143930
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