What is CVE-2021-31650?

CVE-2021-31650 is a critical-severity vulnerability in Online Grading System Project, classified under SQL Injection. CVSS score: 9.8/10. Published 2022-12-16.

How severe is CVE-2021-31650?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Online Grading System Project

CVE-2021-31650

A SQL injection vulnerability in Sourcecodester Online Grading System 1.0 allows remote attackers to execute arbitrary SQL commands via the uname parameter.

Vulnerability class: SQL Injection

Published 2022-12-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.3th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: +0.000

Affected products

Online Grading System Project — versions 1.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

www.exploit-db.com/exploits/49493 (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-31650?: CVE-2021-31650 is a critical-severity vulnerability in Online Grading System Project, classified under SQL Injection. CVSS score: 9.8/10. Published 2022-12-16.
How severe is CVE-2021-31650?: Critical severity. CVSS v3 base score is 9.8 out of 10.