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CVE-2026-33737

Chamilo LMS has an XML External Entity (XXE) Injection

Published: Apr 10, 2026Updated: Apr 16, 2026 Sources: CVE List NVDCWE-611
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 87.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-611

Affected Products

chamilo-lmschamilo
On-premWeb App
Enterprise Software / collaboration-groupware
chamilo lmschamilo
On-premWeb App
Enterprise Software / itsm-monitoring
chamilooss-projectEnterprise Softwareaka chamilo-lms

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Apr 10, 2026
Last Updated
Apr 16, 2026

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