Is CVE-2026-34239 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34239 being exploited in the wild.

How severe is CVE-2026-34239?

Informational severity, with a CVSS score of 7.5, published 20 July 2026.

Which products and versions are affected?

Chamilo Chamilo LMS <= 1.11.40.

Is there a fix for CVE-2026-34239?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-34239 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-34239?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-34239: Chamilo LMS remote code execution in lang.ajax.php

Q: Which products and versions are affected?

Chamilo Chamilo LMS <= 1.11.40.

Q: Is there a fix for CVE-2026-34239?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-34239 attacked?

It is attacked over the network, in a web application.

Q: Am I affected by CVE-2026-34239?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-34239 · Severity: info · CVSS 7.5 · Published 2026-07-20

Chamilo LMS, a popular open-source learning management system, contains a security flaw that allows authenticated users to execute arbitrary commands on the server. This means any user enrolled in a course—including students or teachers—could potentially take full control of the platform, leading to the theft of sensitive student data, modification of course content, or a complete shutdown of the learning service. The issue stems from insufficient access controls on a specific internal script used for language translations.

Quick answers

Is CVE-2026-34239 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34239 being exploited in the wild.
How severe is CVE-2026-34239?: Informational severity, with a CVSS score of 7.5, published 20 July 2026.
Which products and versions are affected?: Chamilo Chamilo LMS <= 1.11.40.
Is there a fix for CVE-2026-34239?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-34239 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-34239?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An authenticated remote code execution (RCE) vulnerability exists in Chamilo LMS versions up to and including 1.11.40. The vulnerability is located in the `main/inc/ajax/lang.ajax.php` script, specifically within the `translate_portfolio_category` function. The endpoint is insufficiently protected by `api_protect_course_script(true)`, which fails to verify administrative privileges. Consequently, any authenticated user enrolled in a course (such as a student, teacher, or DRH) can access the endpoint. An attacker can leverage this improper authorization (CWE-285) to execute arbitrary code on the underlying server. The attack complexity is rated as high, and it requires high privileges (authenticated user status).

Affected products

Chamilo Chamilo LMS <= 1.11.40

Timeline

2026-07-07: advisory: Original GitHub security advisory published
2026-07-20: disclosed: CVE published to NVD dataset

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-4hwq-pv7c-3928

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