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CVE-2026-33698

CRITICAL CVSS 4.0: 9.3 EPSS 0.08%
Updated Apr 16, 2026
PHP
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions before 1.11.38
Fixed In 1.11.38
Type CWE-552
Vendor PHP
Public PoC No

Chamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code from the main/install/ directory and allow an unauthenticated attacker to modify existing files or create new files where allowed by system permissions. This only affects portals with the main/install/ directory still present and read-accessible.

This vulnerability is fixed in 1.11.38.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*
1.11.38