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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-33704

Chamilo LMS Affected by Authenticated Arbitrary File Write via BigUpload endpoint

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

chamilo chamilo-lms

  • < 1.11.38affected

References