Security advisory

{
  "id": "7d8f5bb487db3a7be32d70c19772e856874489aece40eb4fcc5896cf3c676f4d",
  "url": "https://osv.dev/vulnerability/CVE-2020-27409",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-27409",
    "summary": "OpenSIS Community Edition before 7.5 is affected by a cross-site scripting (XSS) vulnerability in SideForStudent.php via the modname parameter.",
    "evidence": "osv:CVE-2020-27409",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-27409",
      "aliases": [
        "CVE-2020-27409"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/OS4ED/openSIS-Classic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0c503770d1a8b5d34b8859a113c7fe0a9a724b34"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:os4ed:opensis:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "ver7.4",
            "v7.3",
            "v7.2",
            "ver7.1",
            "v7.1",
            "Ver7.0Prod_update",
            "Ver7.0beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27409.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/os4ed/opensis-classic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0c503770d1a8b5d34b8859a113c7fe0a9a724b34"
                },
                {
                  "fixed": "edca0855e7bc27d5b28dcb2d16f057ada865e282"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:os4ed:opensis:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "edca0855e7bc27d5b28dcb2d16f057ada865e282"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "ver7.4",
            "v7.3",
            "v7.2",
            "ver7.1",
            "v7.1",
            "Ver7.0Prod_update",
            "Ver7.0beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27409.json"
          }
        }
      ],
      "modified": "2026-10-24T10:47:49.067791122Z",
      "provider": "osv",
      "references": [
        "https://github.com/OS4ED/openSIS-Responsive-Design/compare/ver7.4...V7.5",
        "https://insinuator.net/2020/10/opensis-vulnerabilities/",
        "https://github.com/OS4ED/openSIS-Responsive-Design/commit/edca0855e7bc27d5b28dcb2d16f057ada865e282#diff-5f88e2ce4cd96451df7580911120b4b2"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-27409",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441568,
  "published_at": "2020-12-04T16:15:11.047+00:00"
}