CVE-2026-31857

{"id": "CVE-2026-31857", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "UNREPORTED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-11T18:16:24.360", "references": [{"url": "https://github.com/craftcms/cms/commit/8d4903647dcfd31b8d40ed027e27082013347a80", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/craftcms/cms/security/advisories/GHSA-fp5j-j7j4-mcxc", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "Craft is a content management system (CMS). Prior to 5.9.9 and 4.17.4, a Remote Code Execution vulnerability exists in the Craft CMS 5 conditions system. The BaseElementSelectConditionRule::getElementIds() method passes user-controlled string input through renderObjectTemplate() -- an unsandboxed Twig rendering function with escaping disabled. Any authenticated Control Panel user (including non-admin roles such as Author or Editor) can achieve full RCE by sending a crafted condition rule via standard element listing endpoints. This vulnerability requires no admin privileges, no special permissions beyond basic control panel access, and bypasses all production hardening settings (allowAdminChanges: false, devMode: false, enableTwigSandbox: true). Users should update to the patched 5.9.9 or 4.17.4 release to mitigate the issue."}, {"lang": "es", "value": "Craft es un sistema de gesti\u00f3n de contenido (CMS). Antes de 5.9.9 y 4.17.4, existe una vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo en el sistema de condiciones de Craft CMS 5. El m\u00e9todo BaseElementSelectConditionRule::getElementIds() pasa una entrada de cadena controlada por el usuario a trav\u00e9s de renderObjectTemplate() -- una funci\u00f3n de renderizado de Twig sin 'sandbox' con el escape deshabilitado. Cualquier usuario autenticado del Panel de Control (incluyendo roles no administrativos como Autor o Editor) puede lograr RCE completa enviando una regla de condici\u00f3n especialmente dise\u00f1ada a trav\u00e9s de los puntos finales est\u00e1ndar de listado de elementos. Esta vulnerabilidad no requiere privilegios de administrador, ni permisos especiales m\u00e1s all\u00e1 del acceso b\u00e1sico al panel de control, y elude todas las configuraciones de endurecimiento de producci\u00f3n (allowAdminChanges: false, devMode: false, enableTwigSandbox: true). Los usuarios deben actualizar a la versi\u00f3n parcheada 5.9.9 o 4.17.4 para mitigar el problema."}], "lastModified": "2026-03-17T14:15:46.283", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BFD5346-F567-415B-85F0-56039C3040A5", "versionEndExcluding": "4.17.4", "versionStartIncluding": "4.0.0.1"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2C927EB8-ADF2-4A0A-ADA9-8B6C8230D114", "versionEndExcluding": "5.9.9", "versionStartIncluding": "5.0.1"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "610F6DE9-720F-45B3-81D5-18E7F6B090FD"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90542A12-7090-4C23-AEA5-F6F4964783AC"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:beta2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7DC582DD-53AB-4CF9-961B-50CF5C8DB579"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:beta3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C45A1E5-D598-415D-81C9-19AC302BE323"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:beta4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5515C709-A3D3-4EB1-AA9A-435C63DED7F9"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CC2F40FC-7C27-456A-B16D-679410D1D5CF"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FBAA8227-04F8-404C-907B-B0162B325F5A"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21B28E2C-327A-4CE6-ACAD-97E459712A55"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C7461CF-35AB-48E1-88B6-956DAE1D2AB4"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D8E02D1-601A-4E2B-B619-4775BFDB72D0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}