CVE-2026-33814

Description

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.

CVSS breakdown

Affected products

• Golang / Go1.25.10
• Golang / http20.53.0
• golang.org/x/net / golang.org/x/net/http20 – 0.53.0
• Go standard library / net/http0 – 1.25.10
• Go standard library / net/http1.26.0-0 – 1.26.3

References

• MISChttps://go.dev/cl/761581
• MISChttps://go.dev/cl/761640
• MISChttps://go.dev/issue/78476
• MISChttps://groups.google.com/g/golang-announce/c/qcCIEXso47M
• MISChttps://pkg.go.dev/vuln/GO-2026-4918