Chamilo LMS has Stored Cross Site Scripting on Social Networks Uploaded Files

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.

Problem type

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected products

chamilo

chamilo-lms

< 1.11.34 - AFFECTED

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6

x_refsource_CONFIRM

JSON source

https://cveawg.mitre.org/api/cve/CVE-2025-55208

Click to expand

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2025-55208",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-03-05T20:58:27.467Z",
    "dateReserved": "2025-08-08T21:55:07.966Z",
    "datePublished": "2026-03-05T20:58:27.467Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2026-03-05T20:58:27.467Z"
      },
      "title": "Chamilo LMS has Stored Cross Site Scripting on Social Networks Uploaded Files",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "affected": [
        {
          "vendor": "chamilo",
          "product": "chamilo-lms",
          "versions": [
            {
              "version": "< 1.11.34",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
              "cweId": "CWE-79",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6",
          "name": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "REQUIRED",
            "scope": "CHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL"
          }
        }
      ]
    }
  }
}