High severityNVD Advisory· Published Apr 13, 2026· Updated Apr 29, 2026
CVE-2026-4786
CVE-2026-4786
Description
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- github.com/python/cpython/commit/28b4ad38067bbdad34edfcd03ad2de5f06387e53nvd
- github.com/python/cpython/commit/c5767a72838a8dda9d6dc5d3558075b055c56bcanvd
- github.com/python/cpython/commit/d22922c8a7958353689dc4763dd72da2dea03fffnvd
- github.com/python/cpython/commit/d6d68494be70bdbda20f89f83801ba52ec37daa4nvd
- github.com/python/cpython/commit/f4654824ae0850ac87227fb270f9057477946769nvd
- github.com/python/cpython/issues/148169nvd
- github.com/python/cpython/pull/148170nvd
- mail.python.org/archives/list/security-announce@python.org/thread/JQDUNJVB4AQNTJECSUKOBDU3XCJIPSE5/nvd
News mentions
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