Arbitrary File Upload Vulnerability in Chamilo LMS by Chamilo
CVE-2026-30875

8.8HIGH

Key Information:

Vendor

Chamilo

Status
Chamilo-lms
Vendor
CVE Published:
16 March 2026

What is CVE-2026-30875?

Chamilo LMS, a popular learning management system, has a vulnerability in the H5P Import feature that permits authenticated teachers to perform arbitrary file uploads. This security flaw arises because the system's validation process only verifies the presence of a h5p.json file, neglecting to block the upload of malicious .htaccess or PHP files under different extensions. By crafting a specific H5P package, an attacker can upload a webshell that alters PHP execution permissions for text files, leading to potential remote code execution. This issue has been addressed in version 1.11.36 of Chamilo LMS.

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Affected Version(s)

chamilo-lms < 1.11.36

References

https://github.com/chamilo/chamilo-lms/security/advisorie...
x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.36
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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