CVE-2026-9528
Deferred Deferred - Pending Action
SQL Injection in Electronic Judging System

Publication date: 2026-05-26

Last updated on: 2026-05-26

Assigner: VulDB

Description
A vulnerability was identified in itsourcecode Electronic Judging System 1.0. Impacted is an unknown function of the file /admin/delete_judge.php. Such manipulation of the argument judge_id leads to sql injection. The attack can be executed remotely. The exploit is publicly available and might be used.
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Meta Information
Published
2026-05-26
Last Modified
2026-05-26
Generated
2026-06-15
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-9528
EUVD
EUVD-2026-31785
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
itsourcecode electronic_judging_system 1.0
Helpful Resources
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.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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Compliance Impact

The SQL injection vulnerability in the Electronic Judging System allows unauthorized access to the database, leading to potential data breaches, data tampering, and leakage of sensitive information.

Such security risks can result in non-compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and breaches.

Failure to mitigate this vulnerability could therefore expose organizations to legal and regulatory consequences due to compromised data confidentiality and integrity.

Executive Summary

CVE-2026-9528 is a SQL injection vulnerability in the Electronic Judging System Project V1.0, specifically in the file /admin/delete_judge.php. It occurs because the judge_id parameter is not properly validated, allowing attackers to inject malicious SQL queries.

This vulnerability can be exploited remotely without authentication, enabling unauthorized access to the database.

A proof-of-concept payload such as judge_id=4'or sleep(2)--+ can demonstrate the vulnerability by causing a delayed response.

Impact Analysis

Exploitation of this vulnerability can lead to unauthorized database access, data tampering, leakage of sensitive information, and potential system compromise.

It can cause severe security risks including data breaches and service disruption.

Detection Guidance

This SQL injection vulnerability can be detected by testing the `judge_id` parameter in the `/admin/delete_judge.php` file for injection flaws.

A proof-of-concept payload such as `judge_id=4'or sleep(2)--+` can be used to detect the vulnerability by observing a delayed response, indicating successful SQL injection.

You can use tools like curl or Burp Suite to send requests with this payload and monitor response times.

  • Example curl command: curl "http://targetsite/admin/delete_judge.php?judge_id=4'or sleep(2)--+" -v
Mitigation Strategies

Immediate mitigation steps include:

  • Use prepared statements with parameter binding to prevent SQL injection.
  • Implement strict input validation on the `judge_id` parameter.
  • Minimize database user permissions to limit potential damage.
  • Conduct regular security audits to identify and fix vulnerabilities.
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