CVE-2026-1357— Migration, Backup, Staging <= 0.9.123 - Unauthenticated Arbitrary File Upload

Migration, Backup, Staging <= 0.9.123 - Unauthenticated Arbitrary File Upload

The Migration, Backup, Staging – 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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

危险类型文件的不加限制上传

WordPress plugin Migration, Backup, Staging – WPvivid Backup & Migration 代码问题漏洞

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Migration, Backup, Staging – WPvivid Backup & Migration 0.9.123及之前版本存在代码问题漏洞，该漏洞源于RSA解密过程错误处理不当以及写入上传文件时缺少路径

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