CVE-2026-55794

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{"affected": [{"affectedData": [{"product": "cms", "vendor": "craftcms", "versions": [{"status": "affected", "version": ">= 5.9.0, < 5.10.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Craft CMS is a content management system (CMS). In versions 5.9.0 and above prior to 5.10.0, control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header, potentially leading to authenticated RCE. The issue happens when a user is saving entries. Strings for a signed redirect URL are being compiled as a Twig template via renderObjectTemplate(), and while a sandboxed alternative already exists (renderSandboxedObjectTemplate()), it is not used in this case. This signed URL can be specified by users, as it is reflected in the \u201cReferer\u201d HTTP request header, which is under attacker control. This issue has been fixed in version 5.10.0."}, {"lang": "es", "value": "Craft CMS es un sistema de gesti\u00f3n de contenido (CMS). En las versiones 5.9.0 y superiores anteriores a la 5.10.0, los usuarios del panel de control con capacidad para editar entradas pueden ejecutar c\u00f3digo Twig sin sandbox a trav\u00e9s del encabezado HTTP Referrer, lo que podr\u00eda conducir a una RCE autenticada. El problema ocurre cuando un usuario est\u00e1 guardando entradas. Las cadenas para una URL de redirecci\u00f3n firmada se est\u00e1n compilando como una plantilla Twig a trav\u00e9s de renderObjectTemplate(), y aunque ya existe una alternativa con sandbox (renderSandboxedObjectTemplate()), no se utiliza en este caso. Esta URL firmada puede ser especificada por los usuarios, ya que se refleja en el encabezado de solicitud HTTP \u2019Referer\u2019, el cual est\u00e1 bajo control del atacante. Este problema ha sido solucionado en la versi\u00f3n 5.10.0."}], "id": "CVE-2026-55794", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55794", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-02T12:41:30.954619Z", "version": "2.0.3"}}]}, "published": "2026-07-02T00:16:45.067", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/pull/18680"}, {"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/security/advisories/GHSA-f74w-488g-8x5r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.9.0,5.10.0)"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "cms", "source": "cna", "vendor": "craftcms"}, "product": "craftcms", "vendor": "craftcms"}], "created": "2026-07-02T02:45:16.372109+00:00", "updated": "2026-08-01T22:30:06.555739+00:00", "vendors": ["craftcms", "craftcms$PRODUCT$craftcms"]}