CVE-2026-33814: Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

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

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-10

Last Updated

2026-06-03

EPSS Score

0.78% (percentile: 54.5%)

Affected Products (25)

Other

• 21203-17084
• 21206-17084
• 20981-17084
• 21177-17084
• 21319-17084
• 21276-17084
• 21315-17084
• 21284-17084
• 21252-17084
• 21299-17084
• 20966-17084
• 21107-17084
• 21425-17084
• 21419-17084
• 21383-17084
• 20984-17084
• 21424-17084
• 21426-17084
• 21407-17084
• 21427-17084
• 21428-17084
• 21429-17084
• 21397-17084
• 21420-17084

Open Source Software

• azl3 etcd 3.5.28-1 on Azure Linux 3.0

Revision History

• 2026-05-10: Information published.
• 2026-05-11: Information published.
• 2026-05-13: Information published.
• 2026-05-14: Information published.
• 2026-05-15: Information published.
• 2026-05-16: Information published.
• 2026-05-19: Information published.
• 2026-05-19: Information published.
• 2026-05-26: Information published.
• 2026-05-30: Information published.
• 2026-06-03: Information published.