CVE-2016-2539

HIGH

ATutor < 2.2.1 - Cross-Site Request Forgery via install_modules.php

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-2539. PoCs published by mr_me.

AI-analyzed exploit summary This exploit leverages a CSRF vulnerability in ATutor LMS to upload a malicious ZIP file containing a PHP shell, enabling remote code execution. The PoC includes a Python server to host the payload and JavaScript to trigger the upload and execute commands.

Description

Cross-site request forgery (CSRF) vulnerability in install_modules.php in ATutor before 2.2.2 allows remote attackers to hijack the authentication of users for requests that upload arbitrary files and execute arbitrary PHP code via vectors involving a crafted zip file.

Exploits (1)

exploitdb WORKING POC VERIFIED
by mr_me · javascriptwebappsphp
https://www.exploit-db.com/exploits/39524

This exploit leverages a CSRF vulnerability in ATutor LMS to upload a malicious ZIP file containing a PHP shell, enabling remote code execution. The PoC includes a Python server to host the payload and JavaScript to trigger the upload and execute commands.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: ATutor LMS <= 2.2.1
No auth needed
Prerequisites: Victim must visit a malicious page hosting the exploit · Attacker must host the malicious ZIP file on a server with CORS headers configured
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/39524/
Exploit, Patch, Third Party Advisory, VDB Entry x_refsource_misc
https://packetstormsecurity.com/files/136109/ATutor-LMS-2.2.1-CSRF-Remote-Code-Execution.html

Scores

CVSS v3 8.8
EPSS 0.0425
EPSS Percentile 89.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-352
Status published
Products (1)
atutor/atutor < 2.2.1
Published Feb 07, 2017
Tracked Since Feb 18, 2026