What’s Vulnerable › Vulnerabilities

CVE-2026-33141: Chamilo LMS has an IDOR in REST API Stats Endpoint Exposes Any User's Learning Data

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-10 · updated 2026-10-26
• Weakness: CWE-639

Description

Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the REST API stats endpoint allows any authenticated user (including low-privilege students with ROLE_USER) to read any other user's learning progress, certificates, and gradebook scores for any course, without enrollment or supervisory relationship. This vulnerability is fixed in 2.0.0-RC.3.

Affected products

• chamilo-lms: through 1.11.38; 2.0.0-alpha1, 2.0.0-alpha2, 2.0.0-alpha3, 2.0.0-alpha4, 2.0.0-alpha5, 2.0.0-beta1 (+4)

References

• https://github.com/chamilo/chamilo-lms/commit/792ba05953470ca971617fe2674ed14c1479fa80
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-j2pr-2r5w-jrpj

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