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CVE-2025-55208

Chamilo Lms remote code execution

9.0 CRITICALEPSS 0.31%
  1. Published5 Mar 2026

Description

Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

Chamilo Lms< 1.11.34

Remediation

Fixed in
Chamilo Lms≥ 1.11.34

References

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Frequently asked

Is CVE-2025-55208 being actively exploited?

CVE-2025-55208 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.31%.

How severe is CVE-2025-55208?

CVE-2025-55208 has a CVSS 3.1 base score of 9.0, rated critical. EPSS estimates a 0.31% probability of exploitation.

Which products are affected by CVE-2025-55208?

Affected products include Chamilo Lms.

How do I fix CVE-2025-55208?

Upgrade affected software to a fixed version, for example Chamilo Lms 1.11.34 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-55208 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.