CVE-2026-40924

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{"bugzilla": {"description": "github.com/tektoncd/pipeline: Tekton Pipelines: Denial of Service via large HTTP response body", "id": "2460365", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460365"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Tekton Pipelines. A local user with specific permissions to create TaskRuns or PipelineRuns can exploit this by directing the HTTP resolver to an attacker-controlled server. This server can return a very large response body, leading to the tekton-pipelines-resolvers pod consuming excessive memory and being terminated by Kubernetes. Repeated exploitation of this resource exhaustion vulnerability can cause a sustained denial of service for the entire cluster's resolution services."], "mitigation": {"lang": "en:us", "value": "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."}, "name": "CVE-2026-40924", "package_state": [{"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-controller-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-git-cloner-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-image-bundler-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-image-processing-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-rhel9-operator", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-waiters-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Under investigation", "package_name": "openshift-builds/openshift-builds-webhook-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_lightspeed", "fix_state": "Under investigation", "package_name": 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"product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Under investigation", "package_name": "container-native-virtualization/kubevirt-ssp-operator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Under investigation", "package_name": "container-native-virtualization/kubevirt-tekton-tasks-create-datavolume-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Under investigation", "package_name": "container-native-virtualization/kubevirt-tekton-tasks-disk-virt-customize-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Under investigation", "package_name": "container-native-virtualization/kubevirt-template-validator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:trusted_artifact_signer:1", "fix_state": "Under investigation", "package_name": "rhtas/ec-rhel9", "product_name": "Red Hat Trusted Artifact Signer"}], "public_date": "2026-04-21T20:47:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-40924\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-40924\nhttps://github.com/tektoncd/pipeline/releases/tag/v1.11.1\nhttps://github.com/tektoncd/pipeline/security/advisories/GHSA-m2cx-gpqf-qf74"], "threat_severity": "Moderate"}

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