SQL Injection in Class Timetabling System Admin Course Module

A vulnerability was detected in SourceCodester Class and Exam Timetabling System 1.0. The affected element is the function mysqli_query of the file /admin/modal_add_course.php. The manipulation of the argument course results in sql injection. The attack can be launched remotely. The exploit is now public and may be used.

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-2026-86220 is a critical SQL injection vulnerability in SourceCodester Class and Exam Timetabling System 1.0, specifically within the course parameter of /admin/modal_add_course.php. This vulnerability allows remote attackers to manipulate database queries without authentication, potentially exposing sensitive educational data, modifying course records, or escalating privileges. Educational institutions using this system face immediate risk, as the vulnerability has a public exploit and a high CVSS score of 7.3. The attack surface is particularly dangerous because it targets administrative functions, meaning successful exploitation could compromise the integrity of academic records and system configuration.

Casky's 323 mapped skills leverage Claude AI with extended reasoning to identify attack patterns associated with TA0001 (Reconnaissance) and TA0043 (Reconnaissance) techniques alongside the underlying injection flaws (CWE-74, CWE-89). Practitioners using Casky would observe findings that correlate suspicious input patterns in course parameter submissions with database query anomalies, detect attempts to break SQL syntax through comment sequences or boolean logic, and flag administrative endpoint access patterns that deviate from normal timetabling operations. The platform's skill mapping helps security teams recognize that threat actors typically probe these injection points during reconnaissance, then escalate to data exfiltration or system modification—allowing defenders to catch malicious activity in its earliest stages before exploitation 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-2026-86220.

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

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