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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (17.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Vishalmathur Cloudclassroom — versions 1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/SacX-7/CVE-2025-50866 (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.