CVE-2026-53599

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{"affected": [{"affectedData": [{"product": "core", "vendor": "redaxo", "versions": [{"status": "affected", "version": ">= 5.18.2, < 5.21.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rex_mediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php lets an authenticated backend user with media[upload] permission upload a JPEG/PHP polyglot named shell.php.any.jpg, which web servers with multi-extension PHP handlers can execute as the web-server user. This issue is fixed in version 5.21.1."}, {"lang": "es", "value": "REDAXO es un sistema de gesti\u00f3n de contenido basado en PHP. Desde la versi\u00f3n 5.18.2 hasta la 5.21.1, rex_mediapool::isAllowedExtension en redaxo/src/addons/mediapool/lib/mediapool.php permite a un usuario de backend autenticado con permiso media[upload] subir un pol\u00edglota JPEG/PHP llamado shell.php.any.jpg, que los servidores web con manejadores PHP de m\u00faltiples extensiones pueden ejecutar como el usuario del servidor web. Este problema est\u00e1 solucionado en la versi\u00f3n 5.21.1."}], "id": "CVE-2026-53599", "lastModified": "2026-10-23T23:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53599", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-31T20:11:41.826930Z", "version": "2.0.3"}}]}, "published": "2026-07-31T20:16:51.847", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/redaxo/core/commit/462e36896bb65d292ba22d711044c23c9cfb0340"}, {"source": "security-advisories@github.com", "url": "https://github.com/redaxo/core/pull/6538"}, {"source": "security-advisories@github.com", "url": "https://github.com/redaxo/core/releases/tag/5.21.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/redaxo/core/security/advisories/GHSA-98pp-vccm-qm25"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-434"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.18.2,5.21.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "core", "source": "cna", "vendor": "redaxo"}, "product": "core", "vendor": "redaxo"}], "created": "2026-08-02T20:32:11.198708+00:00", "updated": "2026-08-03T10:00:12.417465+00:00", "vendors": ["redaxo", "redaxo$PRODUCT$core"]}