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9.0
Chamilo LMS: Malicious Code Can Hijack Admin Accounts
CVE-2025-55289
Summary
Chamilo's learning management system is vulnerable to a serious security issue that allows an attacker to take control of admin accounts and access sensitive information. This means an attacker can steal sensitive data, impersonate users, and make unauthorized changes. To stay safe, update to version 1.11.34 or later.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| chamilo | chamilo_lms | <= 1.11.34 | – |
Original title
Chamilo is a learning management system. Prior to version 1.11.34, there is a stored XSS vulnerability in Chamilo LMS (Verison 1.11.32) allows an attacker to inject arbitrary JavaScript into the pl...
Original description
Chamilo is a learning management system. Prior to version 1.11.34, there is a stored XSS vulnerability in Chamilo LMS (Verison 1.11.32) allows an attacker to inject arbitrary JavaScript into the platform’s social network and internal messaging features. When viewed by an authenticated user (including administrators), the payload executes in their browser within the LMS context. This enables full account takeover via session hijacking, unauthorized actions with the victim’s privileges, exfiltration of sensitive data, and potential self-propagation to other users. This issue has been patched in version 1.11.34.
nvd CVSS3.1
8.8
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 6 Mar 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026