CVE-2026-33710 Chamilo LMS has Weak REST API Key Generation (Predictable)

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5time + userid 5 - rand10000, 10000. The rand10000, 10000 call always returns exactly 10000 min == max, making the formula effectively md5timestamp + userid5 - 10000. An attacker who...

CVE-2026-33710

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5time + userid 5 - rand10000, 10000. The rand10000, 10000 call always returns exactly 10000 min == max, making the formula effectively md5timestamp + userid5 - 10000. An attacker who...

CVE-2026-33710 Chamilo LMS has Weak REST API Key Generation (Predictable)

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5time + userid 5 - rand10000, 10000. The rand10000, 10000 call always returns exactly 10000 min == max, making the formula effectively md5timestamp + userid5 - 10000. An attacker who...

CVE-2026-33710

Chamilo LMS (prior to 1.11.38 and 2.0.0-RC.3) uses REST API keys generated by md5(time() + (user_id * 5) - rand(10000, 10000)). Since rand(10000,10000) always returns 10000, the key becomes md5(timestamp + user_id*5 - 10000), enabling brute-forcing by an attacker who knows a username and approxim...

CVE-2026-33708 Chamilo LMS has REST API PII Exposure via get_user_info_from_username

Chamilo LMS is a learning management system. Prior to 1.11.38, the getuserinfofromusername REST API endpoint returns personal information email, first name, last name, user ID, active status of any user to any authenticated user, including students. There is no authorization check. This...

CVE-2026-33708 Chamilo LMS has REST API PII Exposure via get_user_info_from_username

Chamilo LMS is a learning management system. Prior to 1.11.38, the getuserinfofromusername REST API endpoint returns personal information email, first name, last name, user ID, active status of any user to any authenticated user, including students. There is no authorization check. This...

EUVD-2026-21563

Chamilo LMS is a learning management system. Prior to 1.11.38, the getuserinfofromusername REST API endpoint returns personal information email, first name, last name, user ID, active status of any user to any authenticated user, including students. There is no authorization check. This...

CVE-2026-33707 Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1$email with no random component, no expiration, and no rate limiting. An attacker who knows a user's email can compute the reset token and change the...

CVE-2026-33707

Chamilo LMS (affected: prior to 1.11.38 and 2.0.0-RC.3) uses a weak password reset token by generating tokens as sha1(email) with no randomness, no expiration, and no rate limiting. An attacker who knows a user’s email can compute the reset token and change the password without authentication. Th...

CVE-2026-33707 Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1$email with no random component, no expiration, and no rate limiting. An attacker who knows a user's email can compute the reset token and change the...

CVE-2026-33706 Chamilo LMS has a REST API Self-Privilege Escalation (Student → Teacher)

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user with a REST API key can modify their own status field via the updateuserfromusername endpoint. A student status=5 can change their status to Teacher/CourseManager status=1, gaining course creation and management...

EUVD-2026-21559

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user with a REST API key can modify their own status field via the updateuserfromusername endpoint. A student status=5 can change their status to Teacher/CourseManager status=1, gaining course creation and management...

CVE-2026-33706

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user with a REST API key can modify their own status field via the updateuserfromusername endpoint. A student status=5 can change their status to Teacher/CourseManager status=1, gaining course creation and management...

CVE-2026-33705 Chamilo LMS has unauthenticated access to Twig template source files exposes application logic

Chamilo LMS is a learning management system. Prior to 1.11.38, Twig template files .tpl under /main/template/default/ are directly accessible without authentication via HTTP GET requests. These templates expose internal application logic, variable names, AJAX endpoint URLs, and admin panel...

CVE-2026-33704

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user including students can write arbitrary content to files on the server via the BigUpload endpoint. The key parameter controls the filename and the raw POST body becomes the file content. While .php extensions are...

CVE-2026-33704 Chamilo LMS Affected by Authenticated Arbitrary File Write via BigUpload endpoint

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user including students can write arbitrary content to files on the server via the BigUpload endpoint. The key parameter controls the filename and the raw POST body becomes the file content. While .php extensions are...

CVE-2026-33704 Chamilo LMS Affected by Authenticated Arbitrary File Write via BigUpload endpoint

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user including students can write arbitrary content to files on the server via the BigUpload endpoint. The key parameter controls the filename and the raw POST body becomes the file content. While .php extensions are...

CVE-2026-33703 Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users’ Personal Data and API Tokens

Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference IDOR vulnerability in the /social-network/personal-data/userId endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId...

CVE-2026-32894

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, an Insecure Direct Object Reference IDOR vulnerability in the gradebook result view page allows any authenticated teacher to delete any student's grade result across the entire platform by manipulating the deletemark or...

CVE-2026-32932

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, an Open Redirect vulnerability in the session course edit page allows an attacker to redirect an authenticated administrator to an arbitrary external URL after saving coach assignment changes. The redirect also leaks th...