| 제목 | liweiyi ChestnutCMS <=1.5.8 Unrestricted Upload |
|---|
| 설명 | 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. |
|---|
| 원천 | ⚠️ https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md |
|---|
| 사용자 | yuccun (UID 93614) |
|---|
| 제출 | 2025. 12. 19. AM 04:03 (6 개월 ago) |
|---|
| 모더레이션 | 2025. 12. 21. PM 01:51 (2 days later) |
|---|
| 상태 | 수락 |
|---|
| VulDB 항목 | 337715 [liweiyi ChestnutCMS 까지 1.5.8 Filename /dev-api/common/upload FilenameUtils.getExtension 파일 권한 상승] |
|---|
| 포인트들 | 20 |
|---|