CVE-2026-33811

Highest-risk unexploited with PoCs

Exploit code exists, no confirmed in-the-wild activity, ranked by EPSS

Actively Exploited

Confirmed exploited in the wild, sorted by most recently updated

CVSS 7.5EPSS <1%

Published 2026-05-07Updated 2026-05-08

Media 518

Vulnerability details

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNAGo

EPSS score history

Sources

3 links

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CVEShield CVE Organization NVD Analysis

Profile

CVSS

7.5

EPSS

<1%

Published

2026-05-07

Updated

2026-05-08

CNA

Vendors

Go standard library

1 product

CPEs

175

cpe:/a:redhat:hummingbird:1

cpe:/a:redhat:service_mesh:3.0::el9

cpe:/a:redhat:service_mesh:3.1::el9

cpe:/a:redhat:service_mesh:3.2::el9

cpe:/a:redhat:service_mesh:3.3::el9

cpe:/a:redhat:assisted_installer:2

cpe:/a:redhat:openshift_builds:1

cpe:/a:redhat:cert_manager:1

cpe:/a:redhat:openshift_compliance_operator:1

cpe:/a:redhat:confidential_compute_attestation:1

cpe:/a:redhat:cryostat:4

cpe:/a:redhat:openshift_custom_metrics_autoscaler:2

cpe:/a:redhat:deployment_validator_operator

cpe:/a:redhat:external_secrets_operator:1

cpe:/a:redhat:workload_availability_far:0

cpe:/a:redhat:openshift_file_integrity_operator:1

cpe:/a:redhat:gatekeeper:3

cpe:/a:redhat:logging:6

cpe:/a:redhat:lvms:4

cpe:/a:redhat:workload_availability_mdr:0

cpe:/a:redhat:migration_toolkit_applications:8

cpe:/a:redhat:rhmt:1

cpe:/a:redhat:mirror_registry:1

cpe:/a:redhat:mirror_registry:2

cpe:/a:redhat:multiarch_tuning_operator

cpe:/a:redhat:multicluster_engine

cpe:/a:redhat:multicluster_globalhub

cpe:/a:redhat:network_observ_optr:1

cpe:/a:redhat:workload_availability_nhc:0

cpe:/a:redhat:openshift_api_data_protection:1

cpe:/a:redhat:ocp_tools

cpe:/a:redhat:openshift_lightspeed

cpe:/a:redhat:openshift_pipelines:1

cpe:/a:redhat:serverless:1

cpe:/a:redhat:source_to_image:1

cpe:/a:redhat:openshift_power_monitoring

cpe:/a:redhat:acm:2

cpe:/a:redhat:advanced_cluster_security:4

cpe:/a:redhat:ansible_automation_platform:2

cpe:/a:redhat:service_registry:2

cpe:/a:redhat:ceph_storage:5

cpe:/a:redhat:ceph_storage:6

cpe:/a:redhat:ceph_storage:9

cpe:/a:redhat:certifications:9

cpe:/a:redhat:connectivity_link:1

cpe:/a:redhat:rhdh:1

cpe:/a:redhat:edge_manager:1

cpe:/o:redhat:enterprise_linux:10

cpe:/o:redhat:enterprise_linux:7

cpe:/o:redhat:enterprise_linux:8

cpe:/o:redhat:enterprise_linux:9

cpe:/a:redhat:enterprise_linux_ai:3

cpe:/a:redhat:lightspeed_for_runtimes:1

cpe:/a:redhat:openshift_ai

cpe:/a:redhat:openshift_cluster_manager_cli:1

cpe:/a:redhat:openshift:4

cpe:/a:redhat:openshift_data_foundation:4

cpe:/a:redhat:openshift_devspaces:3

cpe:/a:redhat:devworkspace

cpe:/a:redhat:openshift_distributed_tracing:3

cpe:/a:redhat:windows_machine_config

cpe:/a:redhat:openshift_gitops:1

cpe:/a:redhat:openshift_service_on_aws:1

cpe:/a:redhat:container_native_virtualization:4

cpe:/a:redhat:openstack:16.2

cpe:/a:redhat:openstack:17.1

cpe:/a:redhat:openstack:18.0

cpe:/a:redhat:quay:3

cpe:/a:redhat:satellite:6

cpe:/a:redhat:service_interconnect:1

cpe:/a:redhat:service_interconnect:2

cpe:/a:redhat:trusted_artifact_signer:1

cpe:/a:redhat:webterminal:1

cpe:/a:redhat:openshift_security_profiles_operator:1

cpe:/a:redhat:stf:1.5

cpe:/a:redhat:amq_streams:3

cpe:/a:redhat:zero_trust_workload_identity_manager:1

cpe:/a:redhat:zero_trust_workload_identity_manager:0

cpe:/a:redhat:service_mesh:2

cpe:/a:redhat:service_mesh:3

cpe:/a:redhat:red_hat_3scale_amp:2

cpe:/a:redhat:amq_clients:2023

cpe:/a:redhat:rhdh:1.9::el9

cpe:/o:redhat:enterprise_linux:10.2

cpe:/a:redhat:enterprise_linux:9::appstream

cpe:/a:redhat:logging:6.4::el9

cpe:/a:redhat:openshift_gitops:1.19::el8

cpe:/a:redhat:openshift_gitops:1.20::el9

cpe:/a:redhat:openshift_gitops:1.21::el9

cpe:/a:redhat:advanced_cluster_security:4.10::el8

cpe:/a:redhat:advanced_cluster_security:4.11::el9

cpe:/a:redhat:advanced_cluster_security:4.9::el8

cpe:/a:redhat:openshift_builds:1.7::el9

cpe:/a:redhat:edge_manager:1.0::el9

cpe:/a:redhat:enterprise_linux:8::appstream

cpe:/a:redhat:trusted_artifact_signer:1.4::el9

cpe:/a:redhat:enterprise_linux:8

cpe:/a:redhat:enterprise_linux:9

cpe:/a:redhat:openstack:18.0::el9

cpe:/a:redhat:multicluster_engine:2.6::el9

cpe:/a:redhat:edge_manager:1.1::el9

cpe:/a:redhat:edge_manager:1.1::el10

cpe:/a:redhat:edge_manager:1.1:el9

cpe:/a:redhat:multicluster_globalhub:1.4::el9

cpe:/a:redhat:ansible_automation_platform:2.5::el8

cpe:/a:redhat:ansible_automation_platform:2.5::el9

cpe:/a:redhat:ansible_automation_platform:2.6::el10

cpe:/a:redhat:ansible_automation_platform:2.6::el9

cpe:/a:redhat:satellite:6.16::el8

cpe:/a:redhat:satellite:6.16::el9

cpe:/a:redhat:satellite:6.17::el9

cpe:/a:redhat:satellite:6.18::el9

cpe:/a:redhat:satellite:6.19::el9

cpe:/a:redhat:rhmt:1.8::el8

cpe:/a:redhat:openshift_ai:2.25::el9

cpe:/a:redhat:webterminal:1.11::el9

cpe:/a:redhat:webterminal:1.12::el9

cpe:/a:redhat:webterminal:1.13::el9

cpe:/a:redhat:webterminal:1.14::el9

cpe:/a:redhat:webterminal:1.15::el9

cpe:/a:redhat:webterminal:1.16::el9

cpe:/a:redhat:multicluster_globalhub:1.5::el9

cpe:/a:redhat:openshift_api_data_protection:1.6::el9

cpe:/a:redhat:migration_toolkit_applications:8.2::el9

cpe:/a:redhat:multicluster_globalhub:1.6::el9

cpe:/a:redhat:multicluster_engine:2.10::el9

cpe:/a:redhat:multicluster_engine:2.8::el9

cpe:/a:redhat:multicluster_globalhub:1.7::el9

cpe:/a:redhat:cryostat:4::el9

cpe:/a:redhat:logging:6.2::el9

cpe:/o:redhat:enterprise_linux_eus:10.0

cpe:/a:redhat:migration_toolkit_applications:8.1::el9

cpe:/a:redhat:openshift_distributed_tracing:3.10::el9

cpe:/a:redhat:logging:6.0::el9

cpe:/a:redhat:openshift_api_data_protection:1.3::el9

cpe:/a:redhat:source_to_image:1.6::el8

cpe:/a:redhat:workload_availability_nmo:5

cpe:/a:redhat:workload_availability_snr:0

cpe:/a:redhat:workload_availability_sbr:0

cpe:/o:redhat:rhel_els:7

cpe:/a:redhat:rhel_e4s:9.4

cpe:/a:redhat:rhel_eus:9.6

cpe:/a:redhat:workload_availability_nhc:0.12::el9

cpe:/a:redhat:workload_availability_mdr:0.7::el9

cpe:/a:redhat:workload_availability_nmo:5.7::el9

cpe:/a:redhat:amq_streams:3.2::el9

cpe:/a:redhat:openshift_compliance_operator:1::el9

cpe:/a:redhat:lightspeed_for_runtimes:1.0::el9

cpe:/a:redhat:workload_availability_snr:0.13::el9

cpe:/a:redhat:workload_availability_sbr:0.3::el9

cpe:/a:redhat:workload_availability_far:0.8::el9

cpe:/a:redhat:openstack:16.2::el8

cpe:/a:redhat:openshift:4.19::el8

cpe:/a:redhat:logging:6.5::el9

cpe:/a:redhat:acm:2.16::el9

cpe:/a:redhat:openshift:4.19::el9

cpe:/a:redhat:openshift:4.20::el9

cpe:/a:redhat:openshift:4.21::el9

cpe:/a:redhat:multicluster_engine:2.11::el9

cpe:/a:redhat:multicluster_engine:2.9::el9

cpe:/a:redhat:openshift_api_data_protection:1.4::el9

cpe:/a:redhat:openshift:4.14::el9

cpe:/a:redhat:openshift:4.14::el8

cpe:/a:redhat:openshift:4.15::el8

cpe:/a:redhat:openshift:4.16::el8

cpe:/a:redhat:openshift:4.18::el8

cpe:/a:redhat:openshift:4.15::el9

cpe:/a:redhat:openshift:4.16::el9

cpe:/a:redhat:openshift:4.18::el9

cpe:/a:redhat:openshift_ai:3.4::el9

cpe:/a:redhat:rhel_e4s:9.2

cpe:/a:redhat:openshift:4.17::el8

cpe:/a:redhat:openshift:4.17::el9

cpe:/a:redhat:ext_dns_optr:1

cpe:/a:redhat:openshift_api_data_protection:1.5::el9

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