Ghost: Server-Side Request Forgery in Image Fetching

{
  "id": "2f044b181db08a79de92829abf3262a97d26b3f0b03557d6d2a122d30e590b54",
  "url": "https://osv.dev/vulnerability/CVE-2026-70591",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ghost: Server-Side Request Forgery in Image Fetching",
    "summary": "Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a Server-Side Request Forgery in Ghost Admin image fetching allowed any staff-level user to perform a blind HTTP GET request against internal hosts. No output was returned, but this could have been used to probe open ports on internal hosts. This issue is fixed in version 6.54.1.",
    "evidence": "osv:CVE-2026-70591",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-70591",
      "aliases": [
        "BIT-ghost-2026-70591",
        "CVE-2026-70591",
        "GHSA-gcvv-72q8-9v76"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tryghost/ghost",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d56734d71119553ee661b00c08e3e192fc52f826"
                },
                {
                  "fixed": "94e25d9de158bc10b6a74d9aad75944b1a68ee13"
                },
                {
                  "fixed": "5eff2de0f477b11c88f20bceb9d184c0d3b8a62e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "6.54.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5eff2de0f477b11c88f20bceb9d184c0d3b8a62e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "94e25d9de158bc10b6a74d9aad75944b1a68ee13"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v6.54.1"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70591.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.689243974Z",
      "provider": "osv",
      "references": [
        "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70591.json",
        "https://github.com/TryGhost/Ghost/security/advisories/GHSA-gcvv-72q8-9v76",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-70591",
        "https://github.com/TryGhost/Ghost/commit/5eff2de0f477b11c88f20bceb9d184c0d3b8a62e"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70591.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-70591",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502081,
  "published_at": "2026-08-04T21:37:53.766+00:00"
}