Security advisory

{
  "id": "d028f9b0d491cde09f7d1f32f5204c627fe437fb69bb30eaf0f21e4d30cbcbb7",
  "url": "https://osv.dev/vulnerability/CVE-2021-35413",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-35413",
    "summary": "A remote code execution (RCE) vulnerability in course_intro_pdf_import.php of Chamilo LMS v1.11.x allows authenticated attackers to execute arbitrary code via a crafted .htaccess file.",
    "evidence": "osv:CVE-2021-35413",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-35413",
      "aliases": [
        "CVE-2021-35413"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/chamilo/chamilo-lms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0bf136a473502f7432e01cb576c59f453badd81f"
                },
                {
                  "last_affected": "4d7f6fccc232fea91cc721528c6d687092a00eaa"
                },
                {
                  "fixed": "2e5c004b57d551678a1815500ef91524ba7bb757"
                },
                {
                  "fixed": "905a21037ebc9bc5369f0fb380177cb56f496f5c"
                }
              ],
              "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": "2e5c004b57d551678a1815500ef91524ba7bb757"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "905a21037ebc9bc5369f0fb380177cb56f496f5c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-35413.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:49.404323873Z",
      "provider": "osv",
      "references": [
        "https://github.com/andrejspuler/writeups/tree/main/chamilo-lms#authenticated-remote-code-execution-in-import-file",
        "https://github.com/chamilo/chamilo-lms/commit/2e5c004b57d551678a1815500ef91524ba7bb757",
        "https://github.com/chamilo/chamilo-lms/commit/905a21037ebc9bc5369f0fb380177cb56f496f5c",
        "https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-66-2021-05-21-High-impact-very-low-risk-Authenticated-RCE-in-accessory-script"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-35413",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384668,
  "published_at": "2021-12-03T22:15:07.523+00:00"
}