CVE-2026-33710 | Chamilo LMS up to 1.11.37/2.0.0-RC.2 time random values (GHSA-rpmg-j327-mr39)

VDB-356924 · CVE-2026-33710 · GHSA-RPMG-J327-MR39 CHAMILO LMS UP TO 1.11.37/2.0.0-RC.2 TIME RANDOM VALUES HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.5 $0-$5k 0.56+ Summaryinfo A vulnerability categorized as problematic has been discovered in Chamilo LMS up to 1.11.37/2.0.0-RC.2. The impacted element is the function Time. Such manipulation leads to random values. This vulnerability is traded as CVE-2026-33710. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability, which was classified as problematic, has been found in Chamilo LMS up to 1.11.37/2.0.0-RC.2. Affected by this issue is the function time. The manipulation with an unknown input leads to a random values vulnerability. Using CWE to declare the problem leads to CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. Impacted is confidentiality. CVE summarizes: Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, REST API keys are generated using md5(time() + (user_id * 5) - rand(10000, 10000)). The rand(10000, 10000) call always returns exactly 10000 (min == max), making the formula effectively md5(timestamp + user_id*5 - 10000). An attacker who knows a username and approximate key creation time can brute-force the API key. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33710 since 03/23/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001. Upgrading to version 1.11.38 or 2.0.0-RC.3 eliminates this vulnerability. Applying the patch 4448701bb8ec557e94ef02d19c72cbe9c49c2d09 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Type Content Management System Vendor Chamilo Name LMS Version 1.11.0 1.11.1 1.11.2 1.11.3 1.11.4 1.11.5 1.11.6 1.11.7 1.11.8 1.11.9 1.11.10 1.11.11 1.11.12 1.11.13 1.11.14 1.11.15 1.11.16 1.11.17 1.11.18 1.11.19 1.11.20 1.11.21 1.11.22 1.11.23 1.11.24 1.11.25 1.11.26 1.11.27 1.11.28 1.11.29 1.11.30 1.11.31 1.11.32 1.11.33 1.11.34 1.11.35 1.11.36 1.11.37 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: 🔍 CVSSv3info VulDB Meta Base Score: 5.6 VulDB Meta Temp Score: 5.5 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.5 CNA Vector (GitHub_M): 🔒 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: Random values CWE: CWE-330 / CWE-310 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 1.11.38/2.0.0-RC.3 Patch: 4448701bb8ec557e94ef02d19c72cbe9c49c2d09 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: GHSA-rpmg-j327-mr39 Status: Confirmed CVE: CVE-2026-33710 (🔒) GCVE (CVE): GCVE-0-2026-33710 GCVE (VulDB): GCVE-100-356924 Entryinfo Created: 04/10/2026 22:27 Changes: 04/10/2026 22:27 (68) Complete: 🔍 Cache ID: 99:C49:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸