CVE-2026-33737

Chamilo LMS has an XML External Entity (XXE) Injection

State: Published
Severity: 5.3 Medium
Published: Apr 10, 2026
Updated: Apr 13, 2026
Reserved: Mar 23, 2026

Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, multiple files use simplexml_load_string() without XXE protection. With LIBXML_NOENT flag, arbitrary server files can be read. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-611 Improper Restriction of XML External Entity Reference

Affected Products

Product	Versions
chamilo-lmschamilo	< 1.11.38Affected >= 2.0.0-alpha.1, < 2.0.0-RC.3Affected

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-c4ww-qgf2-v89j
https://github.com/chamilo/chamilo-lms/commit/22b1cb1c609b643765c88654155aba27070c927e
https://github.com/chamilo/chamilo-lms/commit/af6b7002af7c15825e98fc522e2ead0d00cacaa3

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