CVE-2026-33698: CWE-552: Files or Directories Accessible to External Parties in chamilo chamilo-lms
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.
AI Analysis
Technical Summary
CVE-2026-33698 affects Chamilo LMS versions before 1.11.38. The vulnerability arises when the main/install/ directory remains present and readable on the portal, enabling a chained attack that bypasses restrictions on PHP code execution. This can allow an unauthenticated attacker to modify existing files or create new files where system permissions allow. The vulnerability is classified under CWE-552 (Files or Directories Accessible to External Parties) and has a CVSS 4.0 score of 9.3, indicating critical severity. No known exploits in the wild have been reported. The issue is resolved by updating to Chamilo LMS version 1.11.38.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to execute PHP code that would normally be blocked, potentially modifying or creating files on the affected system within the limits of system permissions. This can lead to unauthorized code execution and compromise of the affected Chamilo LMS portal. The impact is critical due to the lack of required privileges and user interaction for exploitation.
Mitigation Recommendations
This vulnerability is fixed in Chamilo LMS version 1.11.38. Users should upgrade to version 1.11.38 or later to remediate this issue. Additionally, removing or restricting access to the main/install/ directory can mitigate exposure. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 1.11.38.
CVE-2026-33698: CWE-552: Files or Directories Accessible to External Parties in chamilo chamilo-lms
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-33698 affects Chamilo LMS versions before 1.11.38. The vulnerability arises when the main/install/ directory remains present and readable on the portal, enabling a chained attack that bypasses restrictions on PHP code execution. This can allow an unauthenticated attacker to modify existing files or create new files where system permissions allow. The vulnerability is classified under CWE-552 (Files or Directories Accessible to External Parties) and has a CVSS 4.0 score of 9.3, indicating critical severity. No known exploits in the wild have been reported. The issue is resolved by updating to Chamilo LMS version 1.11.38.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to execute PHP code that would normally be blocked, potentially modifying or creating files on the affected system within the limits of system permissions. This can lead to unauthorized code execution and compromise of the affected Chamilo LMS portal. The impact is critical due to the lack of required privileges and user interaction for exploitation.
Mitigation Recommendations
This vulnerability is fixed in Chamilo LMS version 1.11.38. Users should upgrade to version 1.11.38 or later to remediate this issue. Additionally, removing or restricting access to the main/install/ directory can mitigate exposure. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 1.11.38.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-23T17:06:05.746Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d943121cc7ad14dadcb199
Added to database: 4/10/2026, 6:36:02 PM
Last enriched: 4/10/2026, 6:51:03 PM
Last updated: 4/11/2026, 7:44:17 AM
Views: 9
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