Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Chamilo | Chamilo Lms | < 1.11.38 |
Related Weaknesses (CWE)
References
- https://github.com/chamilo/chamilo-lms/commit/4448701bb8ec557e94ef02d19c72cbe9c4Patch
- https://github.com/chamilo/chamilo-lms/commit/e7400dd840586ae134b286d0a2374f3d26Patch
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-rpmg-j327-mr39Vendor Advisory
FAQ
What is CVE-2026-33710?
CVE-2026-33710 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ret...
How severe is CVE-2026-33710?
CVE-2026-33710 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33710?
Check the references section above for vendor advisories and patch information. Affected products include: Chamilo Chamilo Lms.