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.

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

18.39% chance of exploitation in the next 30 days, 97th percentile

Nuclei

critical · CWE-89

Published

2021-02-15

Updated

2024-08-03

Proof-of-concept exploits (3)

• nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/janobe/CVE-nu11-10182154★ · 2026-10-09
• https://packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Up…
• https://www.exploit-db.com/exploits/49434

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-3239.yaml

Exploit collections (1)

• CVE-2021-3239.yamlzan8in/afrog

Security advisories

• TCSWT/E-Learning-System/blob/main/README.md
• https://www.sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.html

References

• CVE Record
• NVD entry