CVE-2026-4786
HIGHIncomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()
Title source: cnaDescription
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.
References (6)
Scores
CVSS v4
7.0
EPSS
0.0002
EPSS Percentile
5.4%
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
Details
CWE
CWE-77
Status
published
Products (1)
Python Software Foundation/CPython
< 3.15.0
Published
Apr 13, 2026
Tracked Since
Apr 14, 2026