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
7.5
HIGH
CVSS 3.1
EPSS 0.02%
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.
How to fix CVE-2026-33814
To remediate CVE-2026-33814, upgrade the affected package to a fixed version below.
- —upgrade to 1.25.10 or later
- —no fix listed
- —upgrade to 0.53.0 or later
- —upgrade to 1.25.10 or later
Is CVE-2026-33814 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1.25.10, >= 1.26.0-0, < 1.26.3
- from 0
- from 0, < 0.53.0
- from 0, < 1.25.10, >= 1.26.0-0, < 1.26.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |