CVE-2026-33710
Chamilo LMS has Weak REST API Key Generation (Predictable)
- State
- Published
- Severity
- 7.5 High
- Published
- Apr 10, 2026
- Updated
- Apr 13, 2026
- Reserved
- Mar 23, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-330 Use of Insufficiently Random Values
Affected Products
| Product | Versions |
|---|---|
chamilo-lmschamilo |
|
References
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