CVE-2026-33814

high

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33814.json

https://pkg.go.dev/vuln/GO-2026-4918

https://groups.google.com/g/golang-announce/c/qcCIEXso47M

https://go.dev/issue/78476

https://go.dev/cl/761640

https://go.dev/cl/761581

https://bugzilla.redhat.com/show_bug.cgi?id=2467815

https://access.redhat.com/security/cve/CVE-2026-33814

https://access.redhat.com/errata/RHSA-2026:34342

https://access.redhat.com/errata/RHSA-2026:33150

https://access.redhat.com/errata/RHSA-2026:33142

https://access.redhat.com/errata/RHSA-2026:33123

https://access.redhat.com/errata/RHSA-2026:33120

https://access.redhat.com/errata/RHSA-2026:23264

https://access.redhat.com/errata/RHSA-2026:23262

Details

Source: Mitre, NVD

Published: 2026-05-07

Updated: 2026-07-06

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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