| Título | PluXml 5.8.22 Deserialization Vulnerability |
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| Descrição | PluXml CMS version 5.8.22 and earlier contains a critical backend deserialization vulnerability that allows authenticated attackers to achieve remote code execution. The vulnerability stems from improper handling of user-controlled file parameters in the media management module (core/admin/medias.php), which triggers PHP stream wrapper processing during file operations. By uploading a malicious Phar archive disguised as an image file and then triggering deserialization through the file rename functionality using a phar:// protocol path, attackers can exploit a gadget chain in the bundled Guzzle HTTP library (FileCookieJar::__destruct() → save()) to write arbitrary PHP code to the server, resulting in remote code execution. |
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| Fonte | ⚠️ https://note-hxlab.wetolink.com/share/9SJUnaDcJuqz |
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| Utilizador | V3geD4g (UID 60725) |
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| Submissão | 12/12/2025 08h12 (há 4 meses) |
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| Moderação | 02/01/2026 10h57 (21 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 339383 [PluXml até 5.8.22 Media Management core/admin/medias.php __destruct Ficheiro Elevação de Privilégios] |
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| Pontos | 20 |
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