What’s Vulnerable › Vulnerabilities

CVE-2026-30875: Chamilo LMS: Authenticated RCE via H5P Import

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-94

Description

Chamilo LMS is a learning management system. Prior to version 1.11.36, an arbitrary file upload vulnerability in the H5P Import feature allows authenticated users with Teacher role to achieve Remote Code Execution (RCE). The H5P package validation only checks if h5p.json exists but doesn't block .htaccess or PHP files with alternative extensions. An attacker uploads a crafted H5P package containing a webshell and .htaccess that enables PHP execution for .txt files, bypassing security control. This issue has been patched in version 1.11.36.

Affected products

• chamilo-lms: before 1.11.36 — fixed in 1.11.36

How to fix

Upgrade to a fixed version: chamilo-lms 1.11.36. Check the vendor advisory for mitigations.

References

• https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.36
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-mj4f-8fw2-hrfm

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