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CVE Vulnerability Details :
CVE-2026-33814
PUBLISHED
More InfoOfficial Page
Assigner-Go
Assigner Org ID-1bb62c36-49e3-4200-9d77-64a1400537cc
View Known Exploited Vulnerability (KEV) details
Published At-07 May, 2026 | 19:41
Updated At-08 May, 2026 | 18:01
Rejected At-
▼CVE Numbering Authority (CNA)
Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

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
Vendor
golang.org/x/net
Product
golang.org/x/net/http2
Collection URL
https://pkg.go.dev
Package Name
golang.org/x/net/http2
Program Routines
  • clientConnReadLoop.processSettingsNoWrite
  • Transport.NewClientConn
  • Transport.RoundTrip
  • Transport.RoundTripOpt
  • clientConnPool.GetClientConn
  • noDialClientConnPool.GetClientConn
  • noDialH2RoundTripper.NewClientConn
  • noDialH2RoundTripper.RoundTrip
  • unencryptedTransport.RoundTrip
Default Status
unaffected
Versions
Affected
  • From 0 before 0.53.0 (semver)
Vendor
Go standard library
Product
net/http
Collection URL
https://pkg.go.dev
Package Name
net/http
Program Routines
  • http2clientConnReadLoop.processSettingsNoWrite
  • Client.CloseIdleConnections
  • Client.Do
  • Client.Get
  • Client.Head
  • Client.Post
  • Client.PostForm
  • ClientConn.Close
  • ClientConn.RoundTrip
  • Get
  • Head
  • Post
  • PostForm
  • Transport.CloseIdleConnections
  • Transport.NewClientConn
  • Transport.RoundTrip
  • http1ClientConn.Close
  • http1ClientConn.RoundTrip
  • http2Transport.NewClientConn
  • http2Transport.RoundTrip
  • http2Transport.RoundTripOpt
  • http2clientConnPool.GetClientConn
  • http2noDialClientConnPool.GetClientConn
  • http2noDialH2RoundTripper.NewClientConn
  • http2noDialH2RoundTripper.RoundTrip
  • http2unencryptedTransport.RoundTrip
Default Status
unaffected
Versions
Affected
  • From 0 before 1.25.10 (semver)
  • From 1.26.0-0 before 1.26.3 (semver)
Problem Types
TypeCWE IDDescription
N/AN/ACWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
Type: N/A
CWE ID: N/A
Description: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Marwan Atia (marwansamir688@gmail.com)
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://go.dev/cl/761581
N/A
https://go.dev/cl/761640
N/A
https://go.dev/issue/78476
N/A
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
N/A
https://pkg.go.dev/vuln/GO-2026-4918
N/A
Hyperlink: https://go.dev/cl/761581
Resource: N/A
Hyperlink: https://go.dev/cl/761640
Resource: N/A
Hyperlink: https://go.dev/issue/78476
Resource: N/A
Hyperlink: https://groups.google.com/g/golang-announce/c/qcCIEXso47M
Resource: N/A
Hyperlink: https://pkg.go.dev/vuln/GO-2026-4918
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found