What is CVE-2025-50866?

CVE-2025-50866 is a medium-severity vulnerability in Vishalmathur Cloudclassroom, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-07-31.

How severe is CVE-2025-50866?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2025-50866 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Vishalmathur Cloudclassroom

CVE-2025-50866

CloudClassroom-PHP-Project 1.0 contains a reflected Cross-site Scripting (XSS) vulnerability in the email parameter of the postquerypublic endpoint. Improper sanitization allows an attacker to inject arbitrary JavaScript code that executes in the context of the user s browser, potentially leading to session hijacking or phishing attacks.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (19.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Vishalmathur Cloudclassroom — versions 1.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-50866?: CVE-2025-50866 is a medium-severity vulnerability in Vishalmathur Cloudclassroom, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-07-31.
How severe is CVE-2025-50866?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2025-50866 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.