Security advisory

{
  "id": "f2a9e399d251423bc2ba642d69d39bc45ab65c284f56b880855462fc3a07600d",
  "url": "https://osv.dev/vulnerability/CVE-2018-18380",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-18380",
    "summary": "A Session Fixation issue was discovered in Bigtree before 4.2.24. admin.php accepts a user-provided PHP session ID instead of regenerating a new one after a user has logged in to the application. The Session Fixation could allow an attacker to hijack an admin session.",
    "evidence": "osv:CVE-2018-18380",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-18380",
      "aliases": [
        "CVE-2018-18380"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bigtreecms/bigtree-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a2ae6e76b63547c88662a3578e78167377090352"
                },
                {
                  "fixed": "c69402c4764ed9a76301c57277aefe70141b6418"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bigtreecms:bigtree_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.2.24"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c69402c4764ed9a76301c57277aefe70141b6418"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.23",
            "4.2.22",
            "4.2.21",
            "4.2.20",
            "4.2.19",
            "4.2.18",
            "4.2.17",
            "4.2.16",
            "4.2.15",
            "4.2.14",
            "4.2.13",
            "4.2.12",
            "4.2.11",
            "4.2.10",
            "4.2.9",
            "4.2.8",
            "4.2",
            "v4.0b3",
            "4.0beta2",
            "v4.0b1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18380.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:21.435543114Z",
      "provider": "osv",
      "references": [
        "https://github.com/bigtreecms/BigTree-CMS/tree/4.2.24",
        "https://gist.github.com/zionspike/680eb504db7c86296fad0eff30c6317f",
        "https://github.com/bigtreecms/BigTree-CMS/commit/c69402c4764ed9a76301c57277aefe70141b6418"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-18380",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382532,
  "published_at": "2018-10-19T20:29:00.257+00:00"
}