Ghost: Server-Side Request Forgery in Bookmark Fetching

{
  "id": "3ac396916c731764afcbe7d9829e1ba47cb2bf8e89ec2695fce4bbe0e80f3bea",
  "url": "https://osv.dev/vulnerability/BIT-ghost-2026-105647",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ghost: Server-Side Request Forgery in Bookmark Fetching",
    "summary": "Ghost is a Node.js content management system. From 6.54.1 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.",
    "evidence": "osv:BIT-ghost-2026-105647",
    "products": [
      {
        "name": {
          "value": "ghost",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.65.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "BIT-ghost-2026-105647",
      "aliases": [
        "BIT-ghost-2026-105647",
        "CVE-2026-105647",
        "GHSA-322m-ff4g-9vx9"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "6.54.1"
                },
                {
                  "fixed": "6.65.0"
                }
              ]
            }
          ],
          "package": {
            "name": "ghost",
            "purl": "pkg:bitnami/ghost",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/ghost/BIT-ghost-2026-105647.json"
          }
        }
      ],
      "modified": "2026-10-13T08:26:12.801076344Z",
      "provider": "osv",
      "references": [
        "https://github.com/TryGhost/Ghost/commit/3f8594eb53de883ac017545c358f59039cb152de",
        "https://github.com/TryGhost/Ghost/pull/30918",
        "https://github.com/TryGhost/Ghost/releases/tag/v6.65.0",
        "https://github.com/TryGhost/Ghost/security/advisories/GHSA-322m-ff4g-9vx9",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-105647"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*"
        ],
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-105647",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 307519,
  "published_at": "2026-10-13T06:50:15.731+00:00"
}