CVE-2021-3239

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.

• CWE-89

• https://github.com/TCSWT/E-Learning-System/blob/main/README.mdExploit, Third Party Advisory
• https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101821Exploit, Third Party Advisory
• https://packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
• https://www.exploit-db.com/exploits/49434Exploit, Third Party Advisory, VDB Entry
• https://www.sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.htmlProduct, Third Party Advisory
• https://github.com/TCSWT/E-Learning-System/blob/main/README.mdExploit, Third Party Advisory
• https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-101821Exploit, Third Party Advisory
• https://packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
• https://www.exploit-db.com/exploits/49434Exploit, Third Party Advisory, VDB Entry
• https://www.sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.htmlProduct, Third Party Advisory

Published

Feb 15, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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