CVE-2026-112085: webpack-dev-server vulnerable to cross-origin WebSocket access via proxied upgrades

Overview

Severity

High (CVSS 8.2)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-25

Last Updated

2026-10-26

EPSS Score

0.15% (percentile: 3.9%)

Affected Products (1)

Other

• 19693-17084

Revision History

• 2026-10-25: Information published.
• 2026-10-26: Information published.