CVE-2026-62313

{"id": "CVE-2026-62313", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62313", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-26T17:26:53.005002Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "lxc", "product": "incus", "versions": [{"status": "affected", "version": "< 7.3.0"}]}]}], "published": "2026-08-21T15:16:45.867", "references": [{"url": "https://github.com/lxc/incus/security/advisories/GHSA-53cg-qvg7-m8vg", "source": "security-advisories@github.com"}, {"url": "https://github.com/lxc/incus/security/advisories/GHSA-53cg-qvg7-m8vg", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Incus is a system container and virtual machine manager. Prior to version 7.3.0, project-level enforcement of `restricted.containers.privilege=isolated` can be trivially bypassed, allowing a user to create a non-isolated (shared host idmap) container in a project that is configured to forbid them. The restriction only rejects an explicitly set `security.idmap.isolated=false` (or empty) and fails to enforce anything when the key is omitted entirely. Because an unset `security.idmap.isolated` defaults to `false` (non-isolation), a user simply leaves the key out and obtains exactly the container state the restriction is meant to forbid. This defeats the tenant-isolation guarantee the restriction exists to provide. Containers in the project share the host uid/gid map instead of receiving unique, non-overlapping ranges, weakening the isolation boundary between co-tenant containers and the host. Version 7.3.0 patches the issue."}, {"lang": "es", "value": "Incus es un gestor de contenedores de sistema y m\u00e1quinas virtuales. Antes de la versi\u00f3n 7.3.0, la aplicaci\u00f3n a nivel de proyecto de 'restricted.containers.privilege=isolated' puede ser trivialmente eludida, permitiendo a un usuario crear un contenedor no aislado (con idmap de host compartido) en un proyecto configurado para prohibirlos. La restricci\u00f3n solo rechaza un 'security.idmap.isolated=false' (o vac\u00edo) establecido expl\u00edcitamente y no logra aplicar nada cuando la clave se omite por completo. Debido a que un 'security.idmap.isolated' no establecido por defecto es 'false' (no aislamiento), un usuario simplemente omite la clave y obtiene exactamente el estado del contenedor que la restricci\u00f3n pretende prohibir. Esto anula la garant\u00eda de aislamiento de inquilinos que la restricci\u00f3n existe para proporcionar. Los contenedores en el proyecto comparten el mapa uid/gid del host en lugar de recibir rangos \u00fanicos y no superpuestos, debilitando el l\u00edmite de aislamiento entre los contenedores de co-inquilinos y el host. La versi\u00f3n 7.3.0 corrige el problema."}], "lastModified": "2026-10-15T19:10:00.173", "sourceIdentifier": "security-advisories@github.com"}