CVE-2026-14734: SQL Injection in SourceCodester System

Detection Guidance

Detection should focus on requests to /edit_product.php containing suspicious input in the ID parameter. SQL injection attempts commonly include single quotes, SQL comments, boolean logic, unions, time-delay functions, and error-provoking payloads. Even if your logs do not show successful exploitation, repeated probing is a strong signal to investigate.

Application and web server logs are the fastest place to start. Look for unusual query strings hitting the vulnerable endpoint, especially requests where ID contains characters or keywords that should never appear in a numeric identifier. If the application logs database errors, review for syntax errors, unclosed quotes, or database exception traces near requests to edit_product.php.

Technical Notes

Example suspicious log patterns

GET /edit_product.php?ID=1' HTTP/1.1
GET /edit_product.php?ID=1%20OR%201=1-- HTTP/1.1
GET /edit_product.php?ID=1%27%20UNION%20SELECT%20NULL,NULL-- HTTP/1.1
GET /edit_product.php?ID=1%20AND%20SLEEP(5)-- HTTP/1.1

grep examples for Apache or Nginx access logs

grep -Ei 'edit_product\.php.*ID=.*(%27|\x27|%22|--|%23|/\*|union|select|sleep\(|benchmark\(|or%20+1=1|and%20+1=1)' /var/log/nginx/access.log

grep -Ei 'edit_product\.php.*ID=.*(\x27|%27|union|select|sleep\(|or 1=1|and 1=1)' /var/log/apache2/access.log

Splunk example

index=web_logs (uri_path="/edit_product.php" OR uri="/edit_product.php")
| search uri_query="*ID=*"
| regex uri_query="(?i)(%27|'|--|%23|/\*|union|select|sleep\(|benchmark\(|or\s+1=1|and\s+1=1)"
| stats count by src_ip, http_method, uri_query, status

Simple ModSecurity-style match concept

REQUEST_URI contains "/edit_product.php"
AND ARGS:ID matches (?i)(%27|'|--|%23|/\*|union|select|sleep\(|benchmark\(|or\s+1=1|and\s+1=1)

If you have database telemetry, correlate suspicious web requests with backend SQL errors or unusual query timing. Time-based SQLi can show up as repeated requests with long response times. In the absence of application-specific detection content, assume common SQLi tradecraft and watch for both low-volume manual testing and high-volume automated scans.

Mitigation and Patching

At the time of writing, no vendor-issued patch or fixed version number has been publicly confirmed from the retrieved primary references. The only defensible version statement is that SourceCodester Class and Exam Timetabling System 1.0 is affected and the fixed version is unknown. That means defenders should avoid claiming “upgrade to version X” unless they verify that directly from the software publisher.

If you run this application today, the most practical short-term mitigation is to remove public access to the vulnerable endpoint or to the application entirely until you can validate code-level remediation. If business requirements prevent that, place the application behind strict access controls and deploy request filtering that blocks suspicious ID values. Also, review the PHP code in edit_product.php; if the ID parameter is concatenated into SQL statements, refactor to use parameterized queries and strict server-side type validation.

Technical Notes

Immediate access restriction with Nginx

location = /edit_product.php {
    allow 192.0.2.10;
    allow 198.51.100.0/24;
    deny all;
}

Reload:

sudo nginx -t && sudo systemctl reload nginx

Immediate access restriction with Apache

<Files "edit_product.php">
    Require ip 192.0.2.10
    Require ip 198.51.100.0/24
</Files>

Reload:

sudo apachectl configtest && sudo systemctl reload apache2

Emergency workaround at file level

If the application can tolerate it, temporarily disable the endpoint:

sudo mv /var/www/html/edit_product.php /var/www/html/edit_product.php.disabled

Code-level hardening example in PHP

<?php
$id = filter_input(INPUT_GET, 'ID', FILTER_VALIDATE_INT);
if ($id === false || $id === null) {
    http_response_code(400);
    exit('Invalid ID');
}

$stmt = $pdo->prepare('SELECT * FROM products WHERE id = ?');
$stmt->execute([$id]);

WAF-style blocking example

Block requests to /edit_product.php where ARGS:ID contains quotes, comments, UNION, SELECT, SLEEP, or boolean SQLi patterns.

If you discover a trusted maintainer release after publication of this article, verify it carefully before rollout. In environments without a package manager or formal release channel, consider the application effectively unmaintained until proven otherwise.

References

The following points are verified from available source material used for this article:

• NVD lists CVE-2026-14734 as a high-severity SQL injection in SourceCodester Class and Exam Timetabling System 1.0
• Vulnerable file: /edit_product.php
• Vulnerable parameter: ID
• Remote exploitation: Yes
• Public exploit/PoC: Yes, according to NVD
• Confirmed in-the-wild exploitation: No public confirmation identified
• CISA KEV status: Not listed
• Fixed version: Unknown / not publicly confirmed

For more information on responding to data breaches, visit our FAQ on how to respond to a data breach. To learn more about SQL injection vulnerabilities, check out our resource on what is cross-site scripting.

Defenders should continue monitoring for an official vendor advisory or maintainer patch. Until then, assume exposed 1.0 deployments remain at risk and prioritize containment, logging, and code review.

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