CVE-2026-4519 (GCVE-0-2026-4519)

Vulnerability from cvelistv5 – Published: 2026-03-20 15:08 – Updated: 2026-04-07 22:01
VLAI?
Title
webbrowser.open() allows leading dashes in URLs
Summary
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().
Severity ?
7 (High)
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
CWE
  • CWE-20 - Improper Input Validation
Assigner
PSF
References
Impacted products
Vendor Product Version
Python Software Foundation CPython Affected: 0 , < 3.13.13 (python)
Affected: 3.14.0 , < 3.14.4 (python)
Affected: 3.15.0a1 , < 3.15.0a8 (python)
Create a notification for this product.
Credits
Seth Larson Gregory P. Smith
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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