CVE-2026-42843

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Prior to 1.0.0-beta.15, an insecure direct object reference and logic flaw in the Grav API plugin (UsersController::update) allows any authenticated user with basic API access (api.access) to modify their own permission configuration. An attacker can exploit this to escalate their privileges to Super Administrator (admin.super and api.super), leading to full system compromise and potential RCE. This vulnerability is fixed in 1.0.0-beta.15."}, {"lang": "es", "value": "Grav API Plugin es una API RESTful para Grav CMS que proporciona acceso completo sin interfaz al contenido, medios, configuraci\u00f3n, usuarios y gesti\u00f3n del sistema de su sitio. Antes de la 1.0.0-beta.15, una referencia directa a objeto insegura y un fallo l\u00f3gico en el plugin Grav API (UsersController::update) permite a cualquier usuario autenticado con acceso b\u00e1sico a la API (api.access) modificar su propia configuraci\u00f3n de permisos. Un atacante puede explotar esto para escalar sus privilegios a Super Administrador (admin.super y api.super), lo que lleva a un compromiso total del sistema y potencial RCE. Esta vulnerabilidad est\u00e1 corregida en la 1.0.0-beta.15."}], "id": "CVE-2026-42843", "lastModified": "2026-10-26T18:10:00.173", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42843", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-11T18:51:01.009552Z", "version": "2.0.3"}}]}, "published": "2026-05-11T17:16:34.013", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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