dpanel is an open source server management panel written in Go. In versions 1.2.0 through 1.7.2, dpanel allows authenticated users to read arbitrary files from the server via the /api/app/compose/get-from-uri API endpoint. The vulnerability exists in the GetFromUri function in app/application/http/controller/compose.go, where the uri parameter is passed directly to os.ReadFile without proper validation or access control. A logged-in attacker can exploit this flaw to read sensitive files from the host system, leading to information disclosure. No patched version is available as of this writing.

Affected: Go: github.com/donknap/dpanel

### Summary Dpanel has an arbitrary file read vulnerability in the /api/app/compose/get-from-uri interface.Logged in to Dpanel ,this interface can be used to read arbitrary files.

### Details When a user logs into the administrative backend, this interface can read any files on the host/sever (given the necessary permissions), which may lead to system information leakage. The vulnerability lies in the GetFromUri function within the app/application/http/controller/compose.go file. The uri parameter submitted by the user in JSON format can be directly read and returned by os.ReadFile without proper security handling.  

### PoC ```text POST /api/app/compose/get-from-uri HTTP/1.1 Host: x.x.x.x User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2 Accept-Encoding: gzip, deflate Authorization: Bearer eyJ......lWg== Connection: close Content-Type: application/json Content-Length: 21

{"uri":"/etc/passwd"} ```

### Impact This vulnerability could lead to the leakage of sensitive server file information. In versions from 1.2.0 up to the latest (1.7.2), logged-in users can make requests t…