CVE-2026-33703 | Chamilo LMS up to 2.0.0-RC.2 personal-data userId authorization

VDB-356918 · CVE-2026-33703 · GCVE-0-2026-33703 CHAMILO LMS UP TO 2.0.0-RC.2 PERSONAL-DATA USERID AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 0.87+ Summaryinfo A vulnerability, which was classified as problematic, was found in Chamilo LMS up to 2.0.0-RC.2. Affected by this issue is some unknown functionality of the file /social-network/personal-data/. Such manipulation of the argument userId leads to authorization. This vulnerability is listed as CVE-2026-33703. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component. Detailsinfo A vulnerability was found in Chamilo LMS up to 2.0.0-RC.2 and classified as problematic. Affected by this issue is some unknown functionality of the file /social-network/personal-data/. The manipulation of the argument userId with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is integrity. CVE summarizes: 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 parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3. The advisory is available at github.com. This vulnerability is handled as CVE-2026-33703 since 03/23/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. Upgrading to version 2.0.0-RC.3 eliminates this vulnerability. Productinfo Type Content Management System Vendor Chamilo Name LMS Version 2.0.0-RC.0 2.0.0-RC.1 2.0.0-RC.2 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-639 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: LMS 2.0.0-RC.3 Timelineinfo 03/23/2026 CVE reserved 04/10/2026 +17 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-33703 (🔒) GCVE (CVE): GCVE-0-2026-33703 GCVE (VulDB): GCVE-100-356918 Entryinfo Created: 04/10/2026 20:40 Changes: 04/10/2026 20:40 (68) Complete: 🔍 Cache ID: 99:9DE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸