Medium severity · published Apr 10, 2026
CVE-2025-66447
Chamilo LMS has validation-less redirect on login page
4.7
CVSS
0.2%
EPSS
No
On KEV
Description
Chamilo LMS is a learning management system. From 1.11.0 to 2.0-beta.1, anyone can trigger a malicious redirect through the use of the redirect parameter to /login. This vulnerability is fixed in 2.0-beta.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
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
CH
chamilo-lms · chamilo
>= 1.11.0, < 2.0.0-RC.3 · source: vendor
CL
Chamilo Lms · Chamilo
through 1.11.38; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +5 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66447
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66447
Patch
https://github.com/chamilo/chamilo-lms/commit/73ae6293adaa6098374bc22625342dbae5cbc446
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-m82x-prv3-rwwv
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-2025-52998
Chamilo: PHAR deserialization bypass