CVE-2021-31650

CRITICAL

Sourcecodester Online Grading System 1.0 - SQL Injection via uname Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-31650. PoCs published by Ruchi Tiwari.

AI-analyzed exploit summary This exploit demonstrates a time-based SQL injection vulnerability in the 'uname' parameter of the Online Grading System 1.0 login page. The payload uses a SLEEP function to confirm the vulnerability by delaying the response for 20 seconds.

Description

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

Exploits (1)

exploitdb WORKING POC
by Ruchi Tiwari · textwebappsphp
https://www.exploit-db.com/exploits/49493

This exploit demonstrates a time-based SQL injection vulnerability in the 'uname' parameter of the Online Grading System 1.0 login page. The payload uses a SLEEP function to confirm the vulnerability by delaying the response for 20 seconds.

Classification
Working Poc 95%
Attack Type
Sqli
Complexity
Trivial
Reliability
Reliable
Target: Online Grading System 1.0
No auth needed
Prerequisites: Access to the login page of the Online Grading System
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/49493

Scores

CVSS v3 9.8
EPSS 0.0137
EPSS Percentile 68.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-89
Status published
Products (1)
online_grading_system_project/online_grading_system 1.0
Published Dec 16, 2022
Tracked Since Feb 18, 2026