Critical severity · published Mar 2, 2026
CVE-2025-52998
Chamilo: PHAR deserialization bypass
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
Chamilo is a learning management system. Prior to version 1.11.30, in the application, deserialization of data is performed, the data can be spoofed. An attacker can create objects of arbitrary classes, as well as fully control their properties, and thus modify the logic of the web application's operation. This issue has been patched in version 1.11.30.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chamilo-lms · chamilo
< 1.11.30 · source: vendor
CL
Chamilo Lms · Chamilo
before 1.11.30 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52998
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-52998
Patch
https://github.com/chamilo/chamilo-lms/commit/ba7e15d8cfefcd451de939e98d461b17e72eb627
Product
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.30
Patch
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-6mwg-2mw5-rx5v
More from chamilo-lms
9.8
CVE-2026-45140
Chamilo LMS CStudio upload flow allows unauthenticated remote code execution
9.8
CVE-2026-33707
Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms
9.8
CVE-2026-33698
Chamilo LMS affected by unauthenticated RCE in main/install folder
9.8
CVE-2026-28430
Chamilo LMS Vulnerable to Unauthenticated SQL Injection in chamiko-lms model.ajax.php
9.8
CVE-2025-50192
Chamilo: Time-based SQL Injection in /main/webservices/registration.soap.php