Medium severity · published Mar 2, 2026
CVE-2025-52564
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, the open parameter of help.php fails to properly sanitize user input. This allows an attacker to inject arbitrary HTML, such as underlined text, via a crafted URL. 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 10% 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-2025-52564
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-52564
Patch
https://github.com/chamilo/chamilo-lms/commit/083b1d2b0c29b0cc0313a28165ad47bebae9dcb2
Patch
https://github.com/chamilo/chamilo-lms/commit/1ee2d8bb61b67e08946cd80b1a9b92c1a9959c7b
Product
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.30
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-6fmm-qrx4-wgqc
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