CVE-2026-1357

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "WPvivid \u2014 Backup, Migration & Staging", "vendor": "wpvividplugins", "versions": [{"lessThanOrEqual": "0.9.123", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Migration, Backup, Staging \u2013 WPvivid Backup & Migration plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Upload in versions up to and including 0.9.123. This is due to improper error handling in the RSA decryption process combined with a lack of path sanitization when writing uploaded files. When the plugin fails to decrypt a session key using openssl_private_decrypt(), it does not terminate execution and instead passes the boolean false value to the phpseclib library's AES cipher initialization. The library treats this false value as a string of null bytes, allowing an attacker to encrypt a malicious payload using a predictable null-byte key. Additionally, the plugin accepts filenames from the decrypted payload without sanitization, enabling directory traversal to escape the protected backup directory. This makes it possible for unauthenticated attackers to upload arbitrary PHP files to publicly accessible directories and achieve Remote Code Execution via the wpvivid_action=send_to_site parameter."}, {"lang": "es", "value": "El plugin Migration, Backup, Staging \u2013 WPvivid Backup &amp; Migration para WordPress es vulnerable a la carga arbitraria de archivos no autenticada en versiones hasta la 0.9.123 inclusive. Esto se debe a un manejo inadecuado de errores en el proceso de descifrado RSA combinado con una falta de saneamiento de ruta al escribir archivos cargados. Cuando el plugin no logra descifrar una clave de sesi\u00f3n usando openssl_private_decrypt(), no termina la ejecuci\u00f3n y en su lugar pasa el valor booleano falso a la inicializaci\u00f3n del cifrado AES de la biblioteca phpseclib. La biblioteca trata este valor falso como una cadena de bytes nulos, permitiendo a un atacante cifrar una carga \u00fatil maliciosa usando una clave de byte nulo predecible. Adem\u00e1s, el plugin acepta nombres de archivo de la carga \u00fatil descifrada sin saneamiento, lo que permite el salto de directorio para escapar del directorio de copia de seguridad protegido. Esto hace posible que atacantes no autenticados carguen archivos PHP arbitrarios a directorios de acceso p\u00fablico y logren la ejecuci\u00f3n remota de c\u00f3digo a trav\u00e9s del par\u00e1metro wpvivid_action=send_to_site."}], "id": "CVE-2026-1357", "lastModified": "2026-06-17T10:15:39.267", "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-2026-1357", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-11T15:45:37.402512Z", "version": "2.0.3"}}]}, "published": "2026-02-11T06:15:51.677", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/tags/0.9.122/includes/class-wpvivid-crypt.php#L58"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/tags/0.9.122/includes/customclass/class-wpvivid-send-to-site.php#L629"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/tags/0.9.123/includes/class-wpvivid-crypt.php#L58"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/tags/0.9.123/includes/customclass/class-wpvivid-send-to-site.php#L629"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/class-wpvivid-crypt.php#L58"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/customclass/class-wpvivid-send-to-site.php#L629"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3448386/wpvivid-backuprestore#file1"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e5af0317-ef46-4744-9752-74ce228b5f37?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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