| Summary | 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. |
|---|---|
| Publication Date | April 11, 2026, 4:16 a.m. |
| Registration Date | April 15, 2026, 11:37 a.m. |
| Last Update | April 17, 2026, 3:24 a.m. |
| CVSS3.1 : HIGH | |
| スコア | 7.5 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | なし |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* | 1.11.38 | ||||
| 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:*:*:*:*:*:* | |||||