Medium severity · published Apr 10, 2026
CVE-2026-33736
Chamilo LMS has an Insecure Direct Object Reference (IDOR) - User Data Exposure
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, any authenticated user (including ROLE_STUDENT) can enumerate all platform users and access personal information (email, phone, roles) via GET /api/users, including administrator accounts. This vulnerability is fixed in 2.0.0-RC.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chamilo-lms · chamilo
>= 2.0.0-alpha.1, < 2.0.0-RC.3 · source: vendor
CL
Chamilo Lms · Chamilo
2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +4 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33736
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33736
Patch
https://github.com/chamilo/chamilo-lms/commit/1739371ce1c562c007c7f5d53e6d65b7a4ff4109
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-fp2p-fj6c-x3x9
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