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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/chamilo/chamilo-lms/commit/4448701bb8ec557e94ef02d19c72cbe9c49c2d09 Patch
- https://github.com/chamilo/chamilo-lms/commit/e7400dd840586ae134b286d0a2374f3d269a9a9d Patch
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-rpmg-j327-mr39 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · chamiloNVD modified 2026-10-26 21:10
Affected (CPE criteria) 11
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha5:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta1:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta2:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta3:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc1:*:*:*:*:*:*cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2:*:*:*:*:*:*