CVE-2026-33704: Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user (including students) can write...

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.

Ghostwire Analysis — What This Means Practically

Exploitation Probability (EPSS): Low — 0.21% (44th percentile)

Low exploitation probability based on current threat landscape data. Standard patching timeline is appropriate.

High CVSS score indicates significant risk — exploitation could lead to substantial data exposure or system compromise.
2 proof-of-concept exploits available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

CVE-2026-33704: Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user (including students) can write...

Description

Ghostwire Analysis — What This Means Practically

Proof-of-Concept Exploits (2)

Security Coverage (1 articles)

References