# 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.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Mar 2026
- **Updated:** 16 Mar 2026
- **Also known as:** GHSA-mj4f-8fw2-hrfm

## 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 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-30875?

It affects 1 product.


Products: 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

- [CVE-2025-50187](https://insights.sbomify.com/CVE-2025-50187/): Chamilo: Evaluation of untrusted user input leads to Remote Code Execution (critical 9.8)
- [CVE-2023-34944](https://insights.sbomify.com/CVE-2023-34944/): File upload in n/a (critical 9.8)
- [CVE-2022-27423](https://insights.sbomify.com/CVE-2022-27423/): SQL injection in n/a (critical 9.8)
- [CVE-2021-35414](https://insights.sbomify.com/CVE-2021-35414/): SQL injection in n/a (critical 9.8)
- [CVE-2019-13082](https://insights.sbomify.com/CVE-2019-13082/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30875 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-30875 in the wild and no public exploit code.

Affected product: Chamilo Chamilo Lms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-30875/ (Markdown: https://insights.sbomify.com/CVE-2026-30875/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30875
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30875
- OSV: https://osv.dev/vulnerability/CVE-2026-30875

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30875/
Summaries are generated and may contain mistakes; the official description above is the record.