SQL Injection in Class and Exam Timetabling System

A security flaw has been discovered in SourceCodester Class and Exam Timetabling System 1.0. Impacted is an unknown function of the file /delete_subject.php. Performing a manipulation of the argument ID results in sql injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Casky was already ahead

This CVE exploits attack patterns that Casky's 323matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-86298 represents a critical SQL injection vulnerability in SourceCodester Class and Exam Timetabling System version 1.0, specifically within the /delete_subject.php endpoint's ID parameter. This flaw allows unauthenticated remote attackers to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion. Educational institutions and training centers using this timetabling system are directly at risk, as attackers can bypass authentication mechanisms and compromise sensitive academic records, student information, and administrative data. With a CVSS score of 7.3 and public exploit availability, this vulnerability presents an immediate and ongoing threat to organizations that have not yet patched their systems.

Casky's 323 matching skills leverage Claude AI's extended reasoning to detect exploitation attempts targeting this vulnerability by correlating attack patterns with MITRE ATT&CK techniques. The platform identifies Initial Access (TA0001) indicators through anomalous HTTP requests to /delete_subject.php containing SQL metacharacters and injection payloads in the ID parameter. For Discovery and Lateral Movement (TA0043), Casky detects follow-on database reconnaissance queries and attempts to enumerate table structures. Practitioners using Casky would observe findings highlighting suspicious parameter manipulation patterns, unusual database query syntax in application logs, and behavioral indicators consistent with CWE-74 (Improper Neutralization of Special Elements) and CWE-89 (SQL Injection), enabling rapid threat identification and response before database compromise occurs.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

323 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-86298.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-86298

Casky has 323 skills that investigate the attack patterns behind CVE-2026-86298. Run one and get CVSS-scored findings in 3 minutes.

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