CVE-2026-4786: Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-19

Last Updated

2026-06-28

EPSS Score

0.29% (percentile: 21.0%)

Affected Products (4)

Open Source Software

• azl3 python3 3.12.9-10 on Azure Linux 3.0
• azl3 tensorflow 2.16.1-11 on Azure Linux 3.0

Other

• 21379-17084
• 21492-17084

Revision History

• 2026-04-19: Information published.
• 2026-04-20: Information published.
• 2026-04-22: Information published.
• 2026-06-03: Information published.
• 2026-06-28: Information published.