CVE-2026-78054 SourceCodester CVE debrief

Who should care

Defenders responsible for the SourceCodester Class and Exam Timetabling System 1.0 should assess their exposure and prioritize verification of the vulnerability's presence in their inventory.

Why it matters

A weakness in SourceCodester Class and Exam Timetabling System 1.0 can lead to cross-site scripting, potentially allowing remote attackers to inject malicious scripts.

• Cross-site scripting attacks may be launched remotely
• Defenders should verify the presence of this vulnerability in their inventory
• The exploit has been made available to the public and could be used for attacks

Technical summary

The vulnerability is located in the /BSIS1.php file of the SourceCodester Class and Exam Timetabling System 1.0. An attacker can manipulate the course argument to inject malicious scripts, potentially leading to cross-site scripting attacks. This vulnerability allows remote attackers to inject malicious scripts, potentially leading to unauthorized actions within the system. The exploit has been made available to the public and could be used for attacks. Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing the potential impact on their systems.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their inventory and assessing the potential impact on their systems.

Recommended defensive actions

• Verify the presence of this vulnerability in your inventory
• Assess the potential impact on your systems
• Consider applying patches or mitigations if available
• 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 and NVD entry provide information about the vulnerability, but the scope of affected versions and systems requires further verification. The vulnerability is located in the /BSIS1.php file of the SourceCodester Class and Exam Timetabling System 1.0. An attacker can manipulate the course argument to inject malicious scripts, potentially leading to cross-site scripting attacks. Defenders should verify the presence of this vulnerability in their inventory and assess the potential impact on their systems.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.