| Título | Bytedesk <=1.3.9 Unrestricted Upload of File with Dangerous Type (CWE-434) |
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| Descrição | The authenticated file upload endpoint routes SVG files through UploadWatermarkService.addWatermarkToFile(), which writes the file to disk without stripping embedded JavaScript. The POC uploads an SVG containing <script>alert(...)></script> to POST /api/v1/upload/file; the server returns HTTP 200 and a public URL. Visiting the URL triggers Stored XSS, bypassing watermark processing without sanitization. |
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| Fonte | ⚠️ https://github.com/Bytedesk/bytedesk/issues/19 |
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| Utilizador | ZAST.AI (UID 87884) |
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| Submissão | 26/02/2026 07h03 (há 2 meses) |
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| Moderação | 07/03/2026 21h23 (10 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 349727 [Bytedesk até 1.3.9 SVG File UploadRestService.java handleFileUpload Elevação de Privilégios] |
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| Pontos | 20 |
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