VULNERABILITY INTELLIGENCE
CVE-2026-4786
CVSS score7.1 HIGH
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-04-13
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
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.
Weakness classification
- cna@python.org: CWE-77
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-88