Medium severity · published Jul 31, 2025
CVE-2025-50866
CloudClassroom-PHP-Project 1.0 contains a reflected Cross-site Scripting (XSS) vulnerability in the email parameter of the postquerypublic endpoint
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Cloudclassroom · Vishalmathur
1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-50866
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-50866
Third Party Advisory
https://github.com/SacX-7/CVE-2025-50866
More from Cloudclassroom
6.5
CVE-2025-50867
A SQL Injection vulnerability exists in the takeassessment2.php endpoint of the CloudClassroom-PHP-Project 1.0, where the Q5 POST parameter is directly embedded in SQL statements…