Is CVE-2026-33704 actively exploited?

CVE-2026-33704 has no public evidence of in-the-wild exploitation as of 2026-04-16.

What is the CVSS score for CVE-2026-33704?

CVE-2026-33704 has a CVSS score of 7.1 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

How do I patch CVE-2026-33704?

Patch guidance is available from chamilo security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-33704.

Which products are affected by CVE-2026-33704?

1 product: chamilo chamilo lms.

Fix CVE-2026-33704 - HIGH chamilo chamilo lms

Description

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user (including students) can write arbitrary content to files on the server via the BigUpload endpoint. The key parameter controls the filename and the raw POST body becomes the file content. While .php extensions are filtered to .phps, the .pht extension passes through unmodified. On Apache configurations where .pht is handled as PHP, this leads to Remote Code Execution. This vulnerability is fixed in 1.11.38.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: low
Weaknesses: CWE-434 · Unrestricted File Upload

Metadata

Primary Vendor: CHAMILO
Published: 4/10/2026
Last Modified: 4/16/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-33704

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary