CVE-2026-94439: HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-16

EPSS Score

0.32% (percentile: 22.8%)

Affected Products (2)

Other

• 21857-17084
• 21809-17084

Revision History

• 2026-10-16: Information published.