CVE-2026-30875 Chamilo LMS: Authenticated RCE via H5P Import
Authenticated teachers can achieve remote code execution by uploading a crafted H5P package containing a webshell and .htaccess file.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-30875?
CVE-2026-30875 is a high-severity vulnerability in Chamilo Chamilo Lms, published on 16 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-30875?
It affects 1 product.
Products include Chamilo Chamilo Lms.
How do I fix CVE-2026-30875?
No fix has been published for CVE-2026-30875 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-30875 being exploited?
There is no known exploitation of CVE-2026-30875 in the wild and no public exploit code.
Other vulnerabilities in Chamilo Chamilo Lms
Sources
Also known as GHSA-mj4f-8fw2-hrfm.