CVE-2021-3239

CRITICAL NUCLEI

E-Learning System 1.0 - SQL Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-3239. PoCs published by Himanshu Shukla. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates an authentication bypass via SQL injection and achieves remote code execution by uploading a PHP web shell. It then triggers a reverse shell using netcat.

Description

E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows remote attackers to execute arbitrary code on the hosting web server and gain a reverse shell.

Exploits (1)

exploitdb WORKING POC
by Himanshu Shukla · pythonwebappsphp
https://www.exploit-db.com/exploits/49434

This exploit demonstrates an authentication bypass via SQL injection and achieves remote code execution by uploading a PHP web shell. It then triggers a reverse shell using netcat.

Classification
Working Poc 95%
Attack Type
Rce | Sqli | Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: E-Learning System 1.0
No auth needed
Prerequisites: Vulnerable E-Learning System 1.0 instance · Network access to the target · Netcat listener for reverse shell
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

E-Learning System 1.0 - SQL Injection
CRITICALVERIFIEDby xuxeong
Shodan: http.title:"E-Learning System"
FOFA: title="E-Learning System"

References (5)

Core 5
Core References
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49434

Scores

CVSS v3 9.8
EPSS 0.1793
EPSS Percentile 96.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-89
Status published
Products (1)
e-learning_system_project/e-learning_system 1.0
Published Feb 15, 2021
Tracked Since Feb 18, 2026