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 issue arises because the main/install/ directory remains accessible and readable, allowing an unauthenticated attacker to perform a chained attack that enables execution of otherwise blocked PHP code. This can result in modification or creation of files where system permissions allow. The vulnerability is classified under CWE-552 (Files or Directories Accessible to External Parties). It has a CVSS 4.0 score of 9.3, indicating critical severity. The vulnerability is resolved in Chamilo LMS version 1.11.38.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to execute chained attacks that bypass normal restrictions, potentially modifying or creating files on the affected system. This could lead to unauthorized code execution or persistent compromise, depending on system permissions. The vulnerability only affects installations where the main/install/ directory is still present and readable.
Mitigation Recommendations
Upgrade Chamilo LMS to version 1.11.38 or later, where this vulnerability is fixed. Remove or restrict access to the main/install/ directory if upgrading is not immediately possible. Patch status is confirmed fixed in version 1.11.38. No vendor advisory content was provided, but the CVE description explicitly states the fix version.
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 issue arises because the main/install/ directory remains accessible and readable, allowing an unauthenticated attacker to perform a chained attack that enables execution of otherwise blocked PHP code. This can result in modification or creation of files where system permissions allow. The vulnerability is classified under CWE-552 (Files or Directories Accessible to External Parties). It has a CVSS 4.0 score of 9.3, indicating critical severity. The vulnerability is resolved in Chamilo LMS version 1.11.38.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to execute chained attacks that bypass normal restrictions, potentially modifying or creating files on the affected system. This could lead to unauthorized code execution or persistent compromise, depending on system permissions. The vulnerability only affects installations where the main/install/ directory is still present and readable.
Mitigation Recommendations
Upgrade Chamilo LMS to version 1.11.38 or later, where this vulnerability is fixed. Remove or restrict access to the main/install/ directory if upgrading is not immediately possible. Patch status is confirmed fixed in version 1.11.38. No vendor advisory content was provided, but the CVE description explicitly states the fix version.
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: 4/18/2026, 2:04:04 PM
Last updated: 5/26/2026, 1:37:52 PM
Views: 105
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