{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-73268", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-11T17:22:38.645Z", "datePublished": "2026-08-12T19:05:12.287Z", "dateUpdated": "2026-08-12T19:45:37.611Z" }, "containers": { "cna": { "title": "Cluster-curator-controller: cluster-curator-controller: spec.install.overridejob allows arbitrary job spec injection", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets." } ], "affected": [ { "vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/cluster-curator-controller-rhel9", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:multicluster_engine" ] } ], "references": [ { "url": "https://access.redhat.com/security/cve/CVE-2026-73268", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514219", "name": "RHBZ#2514219", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-08-11T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-94", "description": "Improper Control of Generation of Code ('Code Injection')", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "workarounds": [ { "lang": "en", "value": "To mitigate this issue, implement strict Role-Based Access Control (RBAC) policies to limit create and update permissions on `clustercurators.cluster.open-cluster-management.io` resources to trusted administrators only. This restricts the ability of less privileged tenants to exploit the vulnerability and escalate privileges within the Kubernetes environment." } ], "timeline": [ { "lang": "en", "time": "2026-08-10T00:00:00.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-08-11T00:00:00.000Z", "value": "Made public." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-12T19:05:12.287Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-08-12T19:45:32.285133Z", "id": "CVE-2026-73268", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-12T19:45:37.611Z" } } ] } }