CVE-2026-32893: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in chamilo chamilo-lms
Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, a Reflected Cross-Site Scripting (XSS) vulnerability in the exercise question list admin panel allows an attacker to execute arbitrary JavaScript in an authenticated teacher's browser. The pagination code merges all $_GET parameters via array_merge() and outputs the result via http_build_query() directly into HTML href attributes without htmlspecialchars() encoding. This vulnerability is fixed in 2.0.0-RC.3.
AI Analysis
Technical Summary
Chamilo LMS prior to version 2.0.0-RC.3 has a reflected XSS vulnerability (CWE-79) in the exercise question list admin panel. The issue stems from the pagination code that merges all $_GET parameters using array_merge() and outputs them via http_build_query() directly into HTML href attributes without applying htmlspecialchars() encoding. This allows an attacker to inject and execute arbitrary JavaScript in the context of an authenticated teacher's browser session. The vulnerability is resolved in version 2.0.0-RC.3.
Potential Impact
An attacker can execute arbitrary JavaScript in the browser of an authenticated teacher user by exploiting the reflected XSS vulnerability. This can lead to limited confidentiality and integrity impacts, such as theft of session tokens or performing actions on behalf of the teacher user. There is no impact on availability. The vulnerability requires the attacker to have the teacher's authentication and user interaction (UI:R).
Mitigation Recommendations
Upgrade Chamilo LMS to version 2.0.0-RC.3 or later, where this vulnerability is fixed. Since this is a software vulnerability in a self-hosted product, patching by updating the software is the recommended remediation. Patch status is not explicitly stated but the fix is included in version 2.0.0-RC.3, so upgrading to this or a later version mitigates the issue.
CVE-2026-32893: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in chamilo chamilo-lms
Description
Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, a Reflected Cross-Site Scripting (XSS) vulnerability in the exercise question list admin panel allows an attacker to execute arbitrary JavaScript in an authenticated teacher's browser. The pagination code merges all $_GET parameters via array_merge() and outputs the result via http_build_query() directly into HTML href attributes without htmlspecialchars() encoding. This vulnerability is fixed in 2.0.0-RC.3.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Chamilo LMS prior to version 2.0.0-RC.3 has a reflected XSS vulnerability (CWE-79) in the exercise question list admin panel. The issue stems from the pagination code that merges all $_GET parameters using array_merge() and outputs them via http_build_query() directly into HTML href attributes without applying htmlspecialchars() encoding. This allows an attacker to inject and execute arbitrary JavaScript in the context of an authenticated teacher's browser session. The vulnerability is resolved in version 2.0.0-RC.3.
Potential Impact
An attacker can execute arbitrary JavaScript in the browser of an authenticated teacher user by exploiting the reflected XSS vulnerability. This can lead to limited confidentiality and integrity impacts, such as theft of session tokens or performing actions on behalf of the teacher user. There is no impact on availability. The vulnerability requires the attacker to have the teacher's authentication and user interaction (UI:R).
Mitigation Recommendations
Upgrade Chamilo LMS to version 2.0.0-RC.3 or later, where this vulnerability is fixed. Since this is a software vulnerability in a self-hosted product, patching by updating the software is the recommended remediation. Patch status is not explicitly stated but the fix is included in version 2.0.0-RC.3, so upgrading to this or a later version mitigates the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-16T21:03:44.422Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d938791cc7ad14dad95283
Added to database: 4/10/2026, 5:50:49 PM
Last enriched: 4/18/2026, 2:03:52 PM
Last updated: 5/25/2026, 3:42:34 AM
Views: 50
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