| タイトル | liweiyi ChestnutCMS <=1.5.8 Unrestricted Upload |
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| 説明 | In the /dev-api/common/upload endpoint, there is a flaw in the file extension extraction logic before the FilenameUtils.getExtension method is called. The system performs a special parsing operation on the file path to extract the suffix. If the filename contains specific characters (:// and wx_fmt=), the logic extracts the value between wx_fmt= and & (or the end of the string) as the file extension. Attackers can manipulate this behavior to bypass file extension restrictions. |
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| ソース | ⚠️ https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md |
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| ユーザー | yuccun (UID 93614) |
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| 送信 | 2025年12月19日 04:03 (6 月 ago) |
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| モデレーション | 2025年12月21日 13:51 (2 days later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 337715 [liweiyi ChestnutCMS 迄 1.5.8 Filename /dev-api/common/upload FilenameUtils.getExtension ファイル 特権昇格] |
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| ポイント | 20 |
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