CVE WatchAug 13, 2026

CVE-2026-4786

Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "we

CVSS

7.1

High

EPSS

0.3%

p21

KEV

—

Exploit Today

0-100

Published: Apr 13, 2026 · Last modified: Aug 13, 2026 · CWE-77 · CWE-88

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-102026-09-06

Technical 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.

Official references

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