CVE-2026-16156 SourceCodester CVE debrief

Who should care

Users of SourceCodester Class and Exam Timetabling System 1.0 should apply patches or mitigations to prevent cross site scripting attacks. Operators of the affected system should review the vulnerability and consider implementing compensating controls. Security teams should track exceptions and retest remediated assets.

Technical summary

The vulnerability exists in the /forexam.php file of SourceCodester Class and Exam Timetabling System 1.0. An attacker can inject malicious scripts by manipulating the 'day' argument, leading to cross site scripting. The vulnerability can be exploited remotely, and the exploit has been released to the public. Defenders should consider applying patches or updates provided by the vendor to fix the cross site scripting vulnerability.

Defensive priority

Apply patches or updates provided by the vendor to fix the cross site scripting vulnerability.

Recommended defensive actions

• Apply patches or updates provided by the vendor.
• Implement input validation and sanitization for user-supplied data.
• Use a web application firewall to detect and prevent cross site scripting attacks.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-07-18T22:16:43.667Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The exploit has been released to the public and may be used for attacks. Users should exercise caution and consider applying patches or mitigations.

Official resources