Is CVE-2026-16202 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-16202 being exploited in the wild.

How severe is CVE-2026-16202?

Low severity, with a CVSS score of 3.5, published 19 July 2026.

Is there a fix for CVE-2026-16202?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-16202 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-16202?

Check whether you run SourceCodester Class and Exam Timetabling System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-16202: SourceCodester Class and Exam Timetabling System XSS in CYS.php

CVE-2026-16202 · Severity: low · CVSS 3.5 · Published 2026-07-19

The Class and Exam Timetabling System, a web application used for managing academic schedules, contains a security flaw that allows for cross-site scripting (XSS). An attacker can exploit this by injecting malicious scripts into the 'course' parameter, which could lead to the theft of user session information or unauthorized actions performed on behalf of legitimate users. This could compromise the privacy of staff and students using the system.

Technologies: SourceCodester Class and Exam Timetabling System. Vendors: SourceCodester.

Quick answers

Is CVE-2026-16202 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-16202 being exploited in the wild.
How severe is CVE-2026-16202?: Low severity, with a CVSS score of 3.5, published 19 July 2026.
Which products and versions are affected?: SourceCodester Class and Exam Timetabling System 1.0.
Is there a fix for CVE-2026-16202?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-16202 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-16202?: Check whether you run SourceCodester Class and Exam Timetabling System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored cross-site scripting (XSS) vulnerability exists in SourceCodester Class and Exam Timetabling System 1.0 within the /CYS.php component. The vulnerability is caused by insufficient sanitization and output encoding of the 'course' parameter. A remote attacker with low privileges can inject arbitrary JavaScript payloads (e.g., <script>prompt(/xss/);</script>) that are subsequently executed in the browsers of other users when they view the affected page. This can lead to session hijacking via cookie theft or unauthorized state-changing operations. The exploit has been publicly disclosed.

Affected products

SourceCodester Class and Exam Timetabling System 1.0

Timeline

2026-06-13: disclosed: Vulnerability details and PoC shared on GitHub
2026-07-19: advisory: NVD publication date

References

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