CVE-2026-33814: Golang Go

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

Affected products

• Golang Go: before 1.25.10 (fixed in 1.25.10); from 1.26.0, before 1.26.3 (fixed in 1.26.3)
• Golang HTTP2: before 0.53.0 (fixed in 0.53.0)

Published 2026-05-07. Last modified 2026-09-18.