CVE-2020-37051
Unknown Unknown - Not Provided
Time-Based Blind SQL Injection in Online-Exam-System Feedback Form

Publication date: 2026-01-30

Last updated on: 2026-03-12

Assigner: VulnCheck

Description
Online-Exam-System 2015 contains a time-based blind SQL injection vulnerability in the feedback form that allows attackers to extract database password hashes. Attackers can exploit the 'feed.php' endpoint by crafting malicious payload requests that use time delays to systematically enumerate user password characters.
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Meta Information
Published
2026-01-30
Last Modified
2026-03-12
Generated
2026-06-16
AI Q&A
2026-01-31
EPSS Evaluated
2026-06-14
NVD
CVE-2020-37051
EUVD
EUVD-2020-30930
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
sunnygkp10 online-exam-system- 2015
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
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Executive Summary

This vulnerability is a time-based blind SQL injection in the feedback form of Online-Exam-System 2015. Attackers exploit the 'feed.php' endpoint by sending specially crafted requests that cause time delays, allowing them to extract database password hashes by systematically enumerating user password characters.

Impact Analysis

The vulnerability allows attackers to extract password hashes from the database, potentially leading to unauthorized access to user accounts if the hashes are cracked. This compromises the confidentiality of user credentials and can lead to further exploitation of the system.

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