CVE-2026-33704
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
68/100
Published: 2026-04-10
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| chamilo | chamilo_lms | < 1.11.38 |
References & Advisories (2)
Vendor Advisory
Patch