CVE-2026-56853: Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check 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:N/I:N/A:H/E:U
Exploit Status
Not Exploited
Patch Tuesday
2026-Aug
Released
2026-08-20
EPSS Score
0.59% (percentile: 45.7%)

Affected Products (4)

Other

  • 21660-17084
  • 21676-17084
  • 19693-17084
  • 21021-17084

Revision History

  • 2026-08-20: Information published.