CVE-2026-86278: Cross Site Scripting in SourceCodester Syllabus-Aligned Learning Management & Examination System

This vulnerability in SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0 allows an attacker to perform cross-site scripting by manipulating the msg, title, or content arguments in the manage_subjects.php file. The vulnerability is remotely exploitable without privileges and requires user interaction. The CVSS 4.0 base score is 5.3, indicating a medium severity. The exploit code has been made public, increasing the risk of exploitation.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or other malicious actions within the affected application. However, the vulnerability requires user interaction and does not grant direct system access or privilege escalation.

No official patch or remediation information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider applying input validation or sanitization on the affected parameters and restrict access to the affected functionality where possible.