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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

Published: May 7, 2026Updated: Aug 5, 2026 Sources: CVE List NVDCWE-835
7.5HIGH
NVD MITRE
EPSS Score
0.8%
Top 47.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-835CWE-606

Affected Products

golang
oss-project·US
go
OSS Libraries
http2
OSS Libraries
golang.org/x/net
oss-project
golang.org/x/net/http2Library
OSS Libraries / go
Go standard library
oss-project·USaka golang standard library, crypto/x509, net/http, html/template
net/httpLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://go.dev/cl/761581
go.dev
https://go.dev/cl/761640
go.dev
https://go.dev/issue/78476
go.dev
and 16 more references View all →

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