CVE-2026-25199

{"id": "CVE-2026-25199", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25199", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-08T17:24:28.485753Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache CloudStack", "versions": [{"status": "affected", "version": "4.21.0", "versionType": "semver", "lessThanOrEqual": "4.22.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-08T13:16:36.273", "references": [{"url": "https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm", "tags": ["Mailing List", "Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/09/7", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "Instances deployed via the Proxmox extension allow unauthorized access to instances belonging to other tenants.\n\n\n\n\nThis issue affects Apache CloudStack: from 4.21.0.0 through 4.22.0.0.\n\n\n\n\nThe Proxmox extension for CloudStack improperly uses a user-editable instance setting, proxmox_vmid, to associate CloudStack instances with Proxmox virtual machines. Because this value is not restricted or validated against tenant ownership and Proxmox VM IDs are predictable, a non-privileged attacker can modify the setting to reference a VM belonging to another account. This allows unauthorized cross-tenant access and enables full control over the targeted VM, including starting, stopping, and destroying the virtual machine.\n\n\n\n\nUsers are recommended to upgrade to version 4.22.0.1, which fixes this issue.\n\n\n\n\nAs a workaround for the existing installations,\u00a0editing of the proxmox_vmid instance detail by users can be prevented by adding this detail name to the global configuration parameter - user.vm.denied.details."}, {"lang": "es", "value": "Las instancias desplegadas a trav\u00e9s de la extensi\u00f3n Proxmox permiten el acceso no autorizado a instancias pertenecientes a otros inquilinos.\n\nEste problema afecta a Apache CloudStack: desde la versi\u00f3n 4.21.0.0 hasta la 4.22.0.0.\n\nLa extensi\u00f3n Proxmox para CloudStack utiliza incorrectamente una configuraci\u00f3n de instancia editable por el usuario, proxmox_vmid, para asociar instancias de CloudStack con m\u00e1quinas virtuales Proxmox. Debido a que este valor no est\u00e1 restringido ni validado contra la propiedad del inquilino y los ID de VM de Proxmox son predecibles, un atacante no privilegiado puede modificar la configuraci\u00f3n para hacer referencia a una VM perteneciente a otra cuenta. Esto permite el acceso no autorizado entre inquilinos y habilita el control total sobre la VM objetivo, incluyendo el inicio, la detenci\u00f3n y la destrucci\u00f3n de la m\u00e1quina virtual.\n\nSe recomienda a los usuarios actualizar a la versi\u00f3n 4.22.0.1, que corrige este problema.\n\nComo soluci\u00f3n alternativa para las instalaciones existentes, se puede evitar que los usuarios editen el detalle de instancia proxmox_vmid a\u00f1adiendo este nombre de detalle al par\u00e1metro de configuraci\u00f3n global - user.vm.denied.details."}], "lastModified": "2026-10-26T19:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78690ED1-C4B3-4DC9-9B53-FB31D6D17125", "versionEndExcluding": "4.22.0.1", "versionStartIncluding": "4.21.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}