| Titre | liweiyi ChestnutCMS <=1.5.8 Unrestricted Upload |
|---|
| Description | 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. |
|---|
| La source | ⚠️ https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md |
|---|
| Utilisateur | yuccun (UID 93614) |
|---|
| Soumission | 19/12/2025 04:03 (il y a 10 mois) |
|---|
| Modérer | 21/12/2025 13:51 (2 days later) |
|---|
| Statut | Accepté |
|---|
| Entrée VulDB | 337715 [liweiyi ChestnutCMS jusqu’à 1.5.8 Filename /dev-api/common/upload FilenameUtils.getExtension file élévation de privilèges] |
|---|
| Points | 20 |
|---|