CVE-2026-9526
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 found in itsourcecode Electronic Judging System 1.0. This vulnerability affects unknown code of the file /admin/edit_team.php. The manipulation of the argument num_id results in sql injection. The attack may be launched remotely. The exploit has been made public and could 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-2026-9526
EUVD
EUVD-2026-31786
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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Executive Summary

The CVE-2026-9526 vulnerability is a SQL injection flaw found in the Electronic Judging System 1.0, specifically in the /admin/edit_team.php file. It occurs due to improper input validation of the num_id parameter, which allows attackers to inject malicious SQL code remotely without needing authentication.

This flaw enables attackers to perform unauthorized database access, manipulate data, leak sensitive information, and potentially compromise the entire system.

Exploits include boolean-based blind, time-based blind, stacked queries, and UNION query attacks, which can be executed using tools like sqlmap.

Recommended mitigations include using prepared statements with parameter binding, strict input validation, minimizing database user permissions, and conducting regular security audits.

Impact Analysis

This vulnerability can have serious impacts including unauthorized access to your database, allowing attackers to view, modify, or delete sensitive data.

It can lead to data leakage, loss of data integrity, and potentially full system compromise, which can disrupt operations and damage trust.

Detection Guidance

The CVE-2026-9526 vulnerability can be detected by testing the `num_id` parameter in the `/admin/edit_team.php` file for SQL injection flaws. Tools like sqlmap can be used to automate detection using various SQL injection techniques such as boolean-based blind, time-based blind, stacked queries, and UNION query attacks.

  • Use sqlmap to test the vulnerable parameter: sqlmap -u "http://target/admin/edit_team.php?num_id=1" --batch
  • Manually test for SQL injection by injecting payloads like ' OR '1'='1 or ' OR SLEEP(5)-- to observe abnormal behavior or delays.
Mitigation Strategies

Immediate mitigation steps include implementing prepared statements with parameter binding to prevent SQL injection, applying strict input validation on the `num_id` parameter, and minimizing database user permissions to limit potential damage.

  • Use prepared statements with parameter binding in the code handling `num_id`.
  • Validate and sanitize all inputs rigorously before processing.
  • Restrict database user permissions to the minimum necessary.
  • Conduct regular security audits to identify and fix vulnerabilities.
Compliance Impact

The SQL injection vulnerability in the Electronic Judging System allows unauthorized access to and manipulation of sensitive data. This can lead to data breaches, which may result in non-compliance with data protection regulations such as GDPR and HIPAA that require safeguarding personal and sensitive information.

Specifically, the exposure or alteration of sensitive information due to this vulnerability could violate requirements for data confidentiality, integrity, and security mandated by these standards.

Mitigating this vulnerability by implementing prepared statements, strict input validation, and minimizing database permissions is essential to maintain compliance with such regulations.

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