CVE-2021-3239
E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-3239- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-89
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2021-3239- Updated
- 2026-11-02
EUVDEUVD-2021-26578No score
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.
- Record
EUVD-2021-26578- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w2ww-68p9-gv39No score
E-Learning System 1.0 suffers from an unauthenticated SQL injection vulnerability, which allows...
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.
- Record
GHSA-w2ww-68p9-gv39- Weakness
- CWE-89
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | E-Learning System 1.0 - SQL Injection |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3239 is a critical vulnerability (CVSS 9.8) in E-learning System Project System, published February 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 18.9%, the 97th percentile. No source names a fixed version.
References
github.com/TCSWT/E-Learning-System/blob/main/README.md
exploit-db.com/exploits/49434
sourcecodester.com/php/12808/e-learning-system-using-phpmysqli.html
packetstormsecurity.com/files/160966/E-Learning-System-1.0-SQL-Injection-Shell-Upload.html
nvd.nist.gov/vuln/detail/CVE-2021-3239