CVE-2026-42609

{"id": "CVE-2026-42609", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42609", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-14T17:56:12.800871Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "getgrav", "product": "grav", "versions": [{"status": "affected", "version": "< 2.0.0-beta.2"}]}]}], "published": "2026-05-11T16:17:33.610", "references": [{"url": "https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/commit/c66dfeb5ff679a1667678c6335eb9ff3255dfc47", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/commit/d904efc33e03ebb597afde8d3368b28cf0423632", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/security/advisories/GHSA-rr73-568v-28f8", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-639"}, {"lang": "en", "value": "CWE-837"}]}], "descriptions": [{"lang": "en", "value": "Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2."}, {"lang": "es", "value": "Grav es una plataforma web basada en archivos. Antes de 2.0.0-beta.2, una vulnerabilidad de l\u00f3gica de negocio en el Panel de Administraci\u00f3n de Grav permite a un usuario con pocos privilegios (con solo permisos de creaci\u00f3n de usuarios) sobrescribir cuentas existentes, incluyendo la del administrador principal. Al crear un nuevo usuario con un nombre de usuario que ya existe, el sistema actualiza los metadatos y permisos de la cuenta existente en lugar de rechazar la solicitud. Esto lleva a una denegaci\u00f3n de servicio (DoS) en las funciones administrativas y a una desescalada de privilegios de la cuenta ra\u00edz. Esta vulnerabilidad est\u00e1 corregida en 2.0.0-beta.2."}], "lastModified": "2026-10-26T18:10:00.173", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C284702-7909-4A5C-91FE-392FC5BA58C7", "versionEndIncluding": "1.8.0"}, {"criteria": "cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1ABB323F-20AF-40F3-BCD9-262644D242A1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}