Security advisory

{
  "id": "27a62b979aaba164898018c5b9aae9f699c67e7c297965a5679eea7adb18d4d7",
  "url": "https://osv.dev/vulnerability/CVE-2021-35415",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-35415",
    "summary": "A stored cross-site scripting (XSS) vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the course \"Title\" and \"Content\" fields.",
    "evidence": "osv:CVE-2021-35415",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-35415",
      "aliases": [
        "CVE-2021-35415"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/chamilo/chamilo-lms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0bf136a473502f7432e01cb576c59f453badd81f"
                },
                {
                  "last_affected": "4d7f6fccc232fea91cc721528c6d687092a00eaa"
                },
                {
                  "fixed": "19189a91d1eac9aa204b9439b82e3e73c8ac2e03"
                },
                {
                  "fixed": "cf84be1ca1d9a08ad1341dfbf8df475b13a89072"
                },
                {
                  "fixed": "fd54f6194285f949c86060d3b2a7967b43689480"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.11.0"
                      },
                      {
                        "last_affected": "1.11.16"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "19189a91d1eac9aa204b9439b82e3e73c8ac2e03"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cf84be1ca1d9a08ad1341dfbf8df475b13a89072"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fd54f6194285f949c86060d3b2a7967b43689480"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-35415.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:46.111060795Z",
      "provider": "osv",
      "references": [
        "https://github.com/andrejspuler/writeups/tree/main/chamilo-lms#multiple-stored-cross-site-scripting-vulnerabilities",
        "https://github.com/chamilo/chamilo-lms/commit/19189a91d1eac9aa204b9439b82e3e73c8ac2e03",
        "https://github.com/chamilo/chamilo-lms/commit/cf84be1ca1d9a08ad1341dfbf8df475b13a89072",
        "https://github.com/chamilo/chamilo-lms/commit/fd54f6194285f949c86060d3b2a7967b43689480",
        "https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-61-2021-05-14-Low-impact-very-low-risk-XSS-in-course-name",
        "https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-62-2021-05-14-Low-impact-low-risk-XSS-in-course-description",
        "https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-63-2021-05-14-Low-impact-moderate-risk-XSS-in-course-documents",
        "https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-64-2021-05-14-Low-impact-low-risk-XSS-in-course-document-title-on-upload"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-35415",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386119,
  "published_at": "2021-12-03T22:15:07.623+00:00"
}