Security advisory

{
  "id": "c05b8f52dcc9d6562e0dc55f469d22ac110fa18cfaeb558091a7db6a1a2a627e",
  "url": "https://osv.dev/vulnerability/CVE-2017-7881",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-7881",
    "summary": "BigTree CMS through 4.2.17 relies on a substring check for CSRF protection, which allows remote attackers to bypass this check by placing the required admin/developer/ URI within a query string in an HTTP Referer header. This was found in core/admin/modules/developer/_header.php and patched in core/inc/bigtree/admin.php on 2017-04-14.",
    "evidence": "osv:CVE-2017-7881",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-7881",
      "aliases": [
        "CVE-2017-7881"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bigtreecms/bigtree-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "107cca68ee61163ab19bd9e79eca7948b861c727"
                },
                {
                  "fixed": "7761481ac40d83ac29fef42bc6b3c07c86694b56"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bigtreecms:bigtree_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.2.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7761481ac40d83ac29fef42bc6b3c07c86694b56"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "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-2017-7881.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:51.072571431Z",
      "provider": "osv",
      "references": [
        "https://github.com/bigtreecms/BigTree-CMS/commit/7761481ac40d83ac29fef42bc6b3c07c86694b56",
        "https://www.cdxy.me/?p=765"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-7881",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380865,
  "published_at": "2017-04-15T16:59:00.347+00:00"
}