CVE-2026-33704
highpriority · track · 35EPSS 0.008 · 55 %ileEUUSEPSS · scored 2026-10-23
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://chamilo.org/en/download/Patchcnnvd
- https://github.com/chamilo/chamilo-lms/commit/9748f1ffbdb8b6dc84c0e0591c9d3c1d92e21c00cnnvd
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-phfx-pwwg-945vcnnvd
- https://github.com/chamilo/chamilo-lms/commit/9748f1ffbdb8b6dc84c0e0591c9d3c1d92e21c00enisa_euvd
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-phfx-pwwg-945venisa_euvd
- https://github.com/chamilo/chamilo-lms/commit/9748f1ffbdb8b6dc84c0e0591c9d3c1d92e21c00Patchnvd
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-phfx-pwwg-945vVendor Advisorynvd
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