Security advisory

{
  "id": "e4e09b32be6162ad431682177e93ec46081c105b8a9edf7c1d19011d40c8b484",
  "url": "https://osv.dev/vulnerability/CVE-2021-40309",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-40309",
    "summary": "A SQL injection vulnerability exists in the Take Attendance functionality of OS4Ed's OpenSIS 8.0. allows an attacker to inject their own SQL query. The cp_id_miss_attn parameter from TakeAttendance.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request as a user with access to \"Take Attendance\" functionality to trigger this vulnerability.",
    "evidence": "osv:CVE-2021-40309",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-40309",
      "aliases": [
        "CVE-2021-40309"
      ],
      "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/OS4ED/openSIS-Classic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0a2d61fff35900fc91566e6621d49959599bcb4e"
                },
                {
                  "last_affected": "0a2d61fff35900fc91566e6621d49959599bcb4e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:os4ed:opensis:8.0:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0"
                      },
                      {
                        "last_affected": "8.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.0",
            "V8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40309.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/os4ed/opensis-classic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0a2d61fff35900fc91566e6621d49959599bcb4e"
                },
                {
                  "last_affected": "0a2d61fff35900fc91566e6621d49959599bcb4e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:os4ed:opensis:8.0:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0"
                      },
                      {
                        "last_affected": "8.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.0",
            "V8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40309.json"
          }
        }
      ],
      "modified": "2026-10-24T10:50:42.761398715Z",
      "provider": "osv",
      "references": [
        "https://github.com/OS4ED/openSIS-Classic",
        "https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.md",
        "https://www.exploit-db.com/exploits/50249"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-40309",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 442511,
  "published_at": "2021-09-24T16:15:08.417+00:00"
}