CVE-2026-86278 in Syllabus-Aligned Learning Management & Examination System
Summary
by MITRE • 09/07/2026
A vulnerability was found in SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0. The affected element is an unknown function of the file manage_subjects.php. The manipulation of the argument msg/title/content results in cross site scripting. The attack may be performed from remote. The exploit has been made public and could be used.
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Analysis
by VulDB Data Team • 09/07/2026
The SourceCodester Syllabus-Aligned Learning Management & Examination System version 1.0 contains a critical security flaw within its administrative interface, specifically located in the manage_subjects.php file. This vulnerability stems from an unknown function that fails to properly sanitize user-supplied input before processing it for display or storage. The specific parameters affected are msg, title, and content, which serve as entry points for malicious actors to inject executable scripts into the application's context. Because this component is part of a learning management system often accessed by educators and administrators with elevated privileges, the potential impact extends beyond simple data corruption to significant compromise of user sessions and institutional data integrity.
The technical nature of this flaw classifies it as an instance of Cross-Site Scripting, commonly referred to in industry standards such as CWE-79: Improper Neutralization of Input During Web Page Generation. The vulnerability arises because the application does not adequately validate or encode special characters within the msg, title, and content fields before rendering them back to the user interface. When a remote attacker crafts a request containing malicious JavaScript code embedded in these parameters, the server processes it without filtering out script tags or event handlers. Consequently, when an administrator views the affected subject entry, their browser executes the injected script as if it were part of the legitimate application source code. This behavior aligns with ATT&CK technique T1059.007: JavaScript, which describes how attackers use client-side scripts to perform actions on behalf of users or steal sensitive information directly from the victim's session context.
The operational impact of this vulnerability is severe due to its remote exploitability and public availability. Since the attack can be performed remotely without authentication in some configurations or with minimal interaction if authenticated, it lowers the barrier for entry significantly. The fact that an exploit has been made public means that automated scanning tools and opportunistic attackers are likely already targeting instances of this software version. Successful exploitation allows an attacker to hijack administrative sessions by stealing cookies or session tokens, potentially leading to full system compromise. Furthermore, the attacker can perform actions on behalf of the victim, such as modifying course syllabi, altering examination results, or defacing the learning platform's public-facing pages. This undermines the trustworthiness of the educational content and exposes student data to potential interception if sensitive information is displayed within the same session context.
Mitigation strategies must address both immediate remediation and long-term security posture improvements. The most effective solution is to upgrade to a patched version of the Syllabus-Aligned Learning Management & Examination System where this input validation issue has been resolved by developers implementing strict output encoding or parameterized queries depending on the data flow. For systems that cannot be immediately updated, administrators should implement web application firewall rules that detect and block common XSS payloads within the msg, title, and content parameters. Additionally, enforcing Content Security Policy headers can mitigate the impact of successful injection attempts by restricting the sources from which scripts are allowed to execute. Regular security audits focusing on input validation practices across all user-facing forms will help prevent similar vulnerabilities in other modules of the application.