Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
Summary
| CVE | CVE-2026-33814 |
|---|---|
| State | PUBLISHED |
| Assigner | Go |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-07 20:16:42 UTC |
| Updated | 2026-07-24 13:18:01 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.000190000 probability, percentile 0.052620000 (date 2026-05-12)
Problem Types: CWE-835 | CWE-606 | CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') | CWE-606 Unchecked Input for Loop Condition
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | ADP | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Golang.orgxnet | Golang.org/x/net/http2 | affected 0.53.0 semver | Not specified |
| CNA | Go Standard Library | Net/http | affected 1.25.10 semver | Not specified |
| CNA | Go Standard Library | Net/http | affected 1.26.0-0 1.26.3 semver | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782840519 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839981 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839193 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782838753 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839279 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782840539 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782844225 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839658 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782838476 * rpm | Not specified |
| ADP | Red Hat | OpenShift API For Data Protection 1.6 | unaffected 1784058822 * rpm | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | unaffected 1.25.11-2.hum1 * rpm | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | unaffected 1.26.4-2.hum1 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783544461 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783457482 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783429345 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1783946386 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932114 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782931768 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932104 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783536000 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783535989 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783536515 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932521 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783018461 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783018421 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932812 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537001 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932919 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537586 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932969 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933015 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933042 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537392 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933235 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933251 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537955 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933417 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537742 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933602 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783019377 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934054 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934036 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934284 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.0 | unaffected 1782222217 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.0 | unaffected 1782223341 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.0 | unaffected 1782296193 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.0 | unaffected 1782222607 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.1 | unaffected 1782222163 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.1 | unaffected 1782223138 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.1 | unaffected 1782222394 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.1 | unaffected 1782222451 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.2 | unaffected 1782226178 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.2 | unaffected 1782224487 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.2 | unaffected 1782303211 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.2 | unaffected 1782224541 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.3 | unaffected 1782223045 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.3 | unaffected 1782222366 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.3 | unaffected 1782310747 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Service Mesh 3.3 | unaffected 1782222038 * rpm | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | OpenShift Service Mesh 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI RHEL AI 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Virtualization 4 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:43692 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:23262 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| go.dev/issue/78476 | [email protected] | go.dev | Issue Tracking, Mailing List |
| go.dev/cl/761581 | [email protected] | go.dev | Patch |
| access.redhat.com/errata/RHSA-2026:34342 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42644 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33814.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:37387 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| go.dev/cl/761640 | [email protected] | go.dev | Patch |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:33123 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:23264 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:33120 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| groups.google.com/g/golang-announce/c/qcCIEXso47M | [email protected] | groups.google.com | Release Notes |
| access.redhat.com/security/cve/CVE-2026-33814 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:33142 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| pkg.go.dev/vuln/GO-2026-4918 | [email protected] | pkg.go.dev | Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:33150 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Marwan Atia ([email protected]) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-05-07T20:01:11.324Z | Reported to Red Hat. |
| ADP | 2026-05-07T19:41:17.631Z | Made public. |
Solutions
ADP: RHSA-2026:34342: Cluster Observability Operator 1.5.0
ADP: RHSA-2026:43692: OpenShift API for Data Protection 1.6
ADP: RHSA-2026:23262: Red Hat Hardened Images
ADP: RHSA-2026:23264: Red Hat Hardened Images
ADP: RHSA-2026:42644: Red Hat OpenShift AI 2.25
ADP: RHSA-2026:33120: Red Hat OpenShift Service Mesh 3.0
ADP: RHSA-2026:33123: Red Hat OpenShift Service Mesh 3.1
ADP: RHSA-2026:33142: Red Hat OpenShift Service Mesh 3.2
ADP: RHSA-2026:33150: Red Hat OpenShift Service Mesh 3.3
ADP: RHSA-2026:37387: Red Hat Openshift Data Foundation 4.22
Workarounds
ADP: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
There are currently no legacy QID mappings associated with this CVE.