Go HTTP/2 Infinity Loop from SETTINGS_MAX_FRAME_SIZE=0
CVE-2026-33814 Published on May 7, 2026

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.

NVD

Vulnerability Analysis

CVE-2026-33814 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

Unchecked Input for Loop Condition

The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.


Products Associated with CVE-2026-33814

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-33814 are published in these products:

GoLang Go
 
Canonical Ubuntu Linux
 
Red Hat Hummingbird
 
Red Hat Service Mesh
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Enterprise Linux Ai
 
Red Hat Openshift
 
Red Hat Container Native Virtualization
 
Red Hat Cluster Observability Operator
 
Red Hat Openshift Ai
 
Red Hat Openshift Data Foundation
 
Red Hat Multicluster Engine
 
Red Hat Openshift Api Data Protection
 
Red Hat Acm
 

Affected Versions

golang.org/x/net/http2: Go standard library net/http: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat Cluster Observability Operator 1.5.0: Red Hat OpenShift API for Data Protection 1.6: Red Hat Hardened Images: Red Hat Hardened Images: Red Hat OpenShift AI 2.25: Red Hat OpenShift AI 2.25: Red Hat OpenShift AI 2.25: Red Hat OpenShift AI 2.25: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat Openshift Data Foundation 4.22: Red Hat OpenShift Service Mesh 3.0: Red Hat OpenShift Service Mesh 3.0: Red Hat OpenShift Service Mesh 3.0: Red Hat OpenShift Service Mesh 3.0: Red Hat OpenShift Service Mesh 3.1: Red Hat OpenShift Service Mesh 3.1: Red Hat OpenShift Service Mesh 3.1: Red Hat OpenShift Service Mesh 3.1: Red Hat OpenShift Service Mesh 3.2: Red Hat OpenShift Service Mesh 3.2: Red Hat OpenShift Service Mesh 3.2: Red Hat OpenShift Service Mesh 3.2: Red Hat OpenShift Service Mesh 3.3: Red Hat OpenShift Service Mesh 3.3: Red Hat OpenShift Service Mesh 3.3: Red Hat OpenShift Service Mesh 3.3: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat Multicluster Engine for Kubernetes: Red Hat OpenShift Service Mesh 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat Enterprise Linux 10: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Virtualization 4:

Exploit Probability

EPSS
0.78%
Percentile
52.22%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.