Medium severity · published Mar 2, 2026
CVE-2025-52563
Chamilo is a learning management system
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Chamilo is a learning management system. Prior to version 1.11.30, there is a reflected cross-site scripting (XSS) vulnerability due to insufficient sanitization of the page parameter in the session/add_users_to_session.php endpoint. This issue has been patched in version 1.11.30.
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)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Chamilo Lms · Chamilo
before 1.11.30 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52563
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-52563
Product
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.30
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-h3m8-53j3-xjx8
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