Stored XSS Vulnerability in Chamilo Learning Management System
CVE-2025-55208

9.1CRITICAL

Key Information:

Vendor

Chamilo

Status
Chamilo-lms
Vendor
CVE Published:
5 March 2026

What is CVE-2025-55208?

The Chamilo Learning Management System presents a stored XSS vulnerability, allowing low-privilege users to upload malicious files via the 'Social Networks' feature. This exploit enables the execution of arbitrary code within the admin user's inbox, potentially leading to account takeover. To mitigate this risk, users are advised to upgrade to version 1.11.34 or later, which addresses this security flaw.

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Deploy the Patch

Affected Version(s)

chamilo-lms < 1.11.34

References

https://github.com/chamilo/chamilo-lms/security/advisorie...
x_refsource_CONFIRM

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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