CVE-2026-6555

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "ProSolution WP Client", "vendor": "prosolution", "versions": [{"lessThanOrEqual": "2.0.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 2.0.0. This is due to an array validation mismatch where only the first file in the upload array undergoes extension and MIME type validation, while all files are processed and uploaded to a web-accessible directory. This makes it possible for unauthenticated attackers to upload malicious PHP files and achieve remote code execution by sending a valid first file followed by a malicious file."}, {"lang": "es", "value": "El plugin ProSolution WP Client para WordPress es vulnerable a la Carga Arbitraria de Archivos en versiones hasta e incluyendo la 2.0.0. Esto se debe a un desajuste en la validaci\u00f3n de la matriz donde solo el primer archivo en la matriz de carga se somete a validaci\u00f3n de extensi\u00f3n y tipo MIME, mientras que todos los archivos son procesados y cargados a un directorio accesible por web. Esto hace posible que atacantes no autenticados carguen archivos PHP maliciosos y logren ejecuci\u00f3n remota de c\u00f3digo enviando un primer archivo v\u00e1lido seguido de un archivo malicioso."}], "id": "CVE-2026-6555", "lastModified": "2026-07-24T08:10:00.150", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6555", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-20T13:15:31.571596Z", "version": "2.0.3"}}]}, "published": "2026-05-20T02:16:38.930", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/includes/UploadHandler.php#L1345"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/includes/UploadHandler.php#L384"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/public/class-prosolwpclient-public.php#L1072"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/public/class-prosolwpclient-public.php#L998"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/includes/UploadHandler.php#L1345"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/includes/UploadHandler.php#L384"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/public/class-prosolwpclient-public.php#L1072"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/public/class-prosolwpclient-public.php#L998"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3535622/"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0b870d35-7e10-4fb5-8c3b-2bf299d1f3d5?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-434"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

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