Quick answers
- Is CVE-2026-120339 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-120339 being exploited in the wild.
- How severe is CVE-2026-120339?
- Medium severity, with a CVSS score of 4.3, published 2 November 2026.
- Which products and versions are affected?
- mathurvishal CloudClassroom-PHP-Project.
- Is there a fix for CVE-2026-120339?
- 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-2026-120339 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-120339?
- Check whether you run Mathurvishal CloudClassroom PHP Project. 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
The vulnerability is a stored XSS flaw in the updatedetailsfromfaculty.php file where the fname parameter is not properly sanitized or encoded before storage and display. The attack requires network access and can be initiated remotely without authentication requirements beyond typical application access. Exploitation allows arbitrary JavaScript execution in users' browsers within the application context.
Affected products
- mathurvishal CloudClassroom-PHP-Project
Timeline
- 2026-11-02: disclosed