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CVE-2026-33737

Chamilo LMS has an XML External Entity (XXE) Injection

MEDIUM
6.5
CVSS Score
Published: April 10, 2026 at 07:05 PM UTC
Updated: June 17, 2026 at 10:38 AM UTC
1 product affected across 1 vendorChamilo LMS

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Chamilo LMS· Chamilo
95%
v < 1.11.38v < 2.0.0-RC.32.0.0 alpha12.0.0 alpha22.0.0 alpha32.0.0 alpha42.0.0 alpha52.0.0 beta12.0.0 beta22.0.0 beta32.0.0 rc12.0.0 rc2
Affected range stops below 1.11.38, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.0.0-RC.3, so it looks safe — our inference, not a vendor statement

References (3)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/chamilo/chamilo-lms/commit/22b1cb1c609b643765c88654155aba27070c927e
x_refsource_MISCPatch
Source: [email protected]
https://github.com/chamilo/chamilo-lms/commit/af6b7002af7c15825e98fc522e2ead0d00cacaa3
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-c4ww-qgf2-v89j

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-611

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