CVE-2026-56859

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{"bugzilla": {"description": "encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue", "id": "2515840", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515840"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-776", "details": ["A flaw was found in the `encoding/xml` package of Go. The `DecodeElement` function failed to correctly track recursion depth, which could lead to stack exhaustion. A remote attacker could exploit this vulnerability by providing a specially crafted XML input, resulting in a Denial of Service (DoS) for the affected application."], "name": "CVE-2026-56859", "package_state": [{"cpe": "cpe:/a:redhat:assisted_installer:2", "fix_state": "Affected", "package_name": "rhai/assisted-installer-rhel9", "product_name": "Assisted Installer for Red Hat OpenShift Container Platform 2"}, {"cpe": "cpe:/a:redhat:aws_lb_optr:1", "fix_state": "Affected", "package_name": "albo/aws-load-balancer-operator", "product_name": "AWS Load Balancer Operator"}, {"cpe": "cpe:/a:redhat:aws_lb_optr:1", "fix_state": "Affected", "package_name": "albo/aws-load-balancer-rhel8-operator", "product_name": "AWS Load Balancer Operator"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": "openshift-builds/openshift-builds-waiters-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:cert_manager:1", "fix_state": "Affected", 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"product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "cri-tools", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "ignition", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "microshift", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift4/frr-rhel9", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift4/ose-cli", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": 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"product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:windows_machine_config", "fix_state": "Affected", "package_name": "openshift4-wincw/windows-machine-config-rhel9-operator", "product_name": "Red Hat OpenShift for Windows Containers"}, {"cpe": "cpe:/a:redhat:openshift_gitops:1", "fix_state": "Affected", "package_name": "microshift-gitops", "product_name": "Red Hat OpenShift GitOps"}, {"cpe": "cpe:/a:redhat:openshift_gitops:1", "fix_state": "Affected", "package_name": "openshift-gitops-1/dex-rhel8", "product_name": "Red Hat OpenShift GitOps"}, {"cpe": "cpe:/a:redhat:openshift_gitops:1", "fix_state": "Affected", "package_name": "openshift-gitops-1/dex-rhel9", "product_name": "Red Hat OpenShift GitOps"}, {"cpe": "cpe:/a:redhat:openshift_gitops:1", "fix_state": "Affected", "package_name": "openshift-gitops-argocd-cli", "product_name": "Red Hat OpenShift GitOps"}, {"cpe": "cpe:/a:redhat:openshift_service_on_aws:1", "fix_state": "Affected", "package_name": "rosa", "product_name": "Red Hat OpenShift on AWS"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Affected", "package_name": "container-native-virtualization/kubemacpool-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Affected", "impact": "important", "package_name": "openshift-golang-builder-container", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Affected", "package_name": "rhosp-rhel8/osp-director-agent", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Affected", "package_name": "rhosp-rhel9/osp-director-agent", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:18.0", "fix_state": "Affected", "package_name": "rhoso-operators/ovn-rhel9-operator", "product_name": "Red Hat OpenStack Platform 18.0"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/iop-vmaas-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:rhel_satellite_client:6::el7", "fix_state": "Affected", "package_name": "foreman_ygg_worker", "product_name": "Red Hat Satellite Client"}, {"cpe": "cpe:/a:redhat:rhel_satellite_client:6::el7", "fix_state": "Affected", "package_name": "yggdrasil", "product_name": "Red Hat Satellite Client"}, {"cpe": "cpe:/a:redhat:service_interconnect:2", "fix_state": "Affected", "package_name": "service-interconnect/skupper-cli-rhel9", "product_name": "Red Hat Service Interconnect 2"}, {"cpe": "cpe:/a:redhat:service_interconnect:2", "fix_state": "Affected", "package_name": "skupper-cli", "product_name": "Red Hat Service Interconnect 2"}, {"cpe": "cpe:/a:redhat:trusted_artifact_signer:1", "fix_state": "Affected", "package_name": "rhtas/ec-rhel9", "product_name": "Red Hat Trusted Artifact Signer"}, {"cpe": "cpe:/a:redhat:webterminal:1", "fix_state": "Affected", "package_name": "web-terminal/web-terminal-exec-rhel9", "product_name": "Red Hat Web Terminal"}, {"cpe": "cpe:/a:redhat:secrets_management_console:0", "fix_state": "Will not fix", "package_name": "external-secrets-management/console-plugin-operator-rhel9", "product_name": "Secrets Management Console for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_security_profiles_operator:1", "fix_state": "Affected", "package_name": "compliance/openshift-selinuxd-rhel8", "product_name": "Security Profiles Operator"}, {"cpe": "cpe:/a:redhat:amq_streams:2", "fix_state": "Affected", "package_name": "golang-github-danielqsj-kafka_exporter", "product_name": "streams for Apache Kafka 2"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Affected", "package_name": "golang-github-danielqsj-kafka_exporter", "product_name": "streams for Apache Kafka 3"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Affected", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Affected", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}], "public_date": "2026-08-13T21:58:52Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-56859\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-56859\nhttps://go.dev/cl/803320\nhttps://go.dev/issue/80481\nhttps://groups.google.com/g/golang-announce/c/94pEornpRlI\nhttps://pkg.go.dev/vuln/GO-2026-6088"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.25.13)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.26.0-0,1.26.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.27.0-0,1.27.0-rc.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "encoding/xml", "source": "cna", "vendor": "Go standard library"}, "product": "encoding/xml", "vendor": "go_standard_library"}], "created": "2026-08-14T00:45:17.204341+00:00", "updated": "2026-08-15T02:00:04.201104+00:00", "vendors": ["go_standard_library", "go_standard_library$PRODUCT$encoding/xml"]}