Security advisory

{
  "id": "ff8a794591bd2a7f6ba92b81f54cce3a629c545c1de6d633000d0be0bbbb267c",
  "url": "https://osv.dev/vulnerability/CVE-2021-37391",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-37391",
    "summary": "A user without privileges in Chamilo LMS 1.11.14 can send an invitation message to another user, e.g., the administrator, through main/social/search.php, main/inc/lib/social.lib.php and steal cookies or execute arbitrary code on the administration side via a stored XSS vulnerability via social network the send invitation feature.",
    "evidence": "osv:CVE-2021-37391",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-37391",
      "aliases": [
        "CVE-2021-37391"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/chamilo/chamilo-lms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0bf136a473502f7432e01cb576c59f453badd81f"
                },
                {
                  "fixed": "25d89346c1b5f73b6b8d969971b4e402dd89d7e5"
                },
                {
                  "fixed": "de43a77049771cce08ea7234c5c1510b5af65bc8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.11.0"
                      },
                      {
                        "fixed": "1.11.14"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "de43a77049771cce08ea7234c5c1510b5af65bc8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37391.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:49.227065506Z",
      "provider": "osv",
      "references": [
        "https://github.com/chamilo/chamilo-lms/commit/de43a77049771cce08ea7234c5c1510b5af65bc8",
        "https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chamilo-lms-1.11.14-xss-vulnerabilities"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-37391",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386205,
  "published_at": "2021-08-10T20:15:08.683+00:00"
}