{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.9.0"
              },
              {
                "fixed": "6.54.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "bc5f6ed3cc406d41de962c1ea669bcca4f7faa88"
            },
            {
              "fixed": "a8bea3a4ceec4c852b880f4885119453c3d8588e"
            },
            {
              "fixed": "94e25d9de158bc10b6a74d9aad75944b1a68ee13"
            }
          ],
          "repo": "https://github.com/tryghost/ghost",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-pr22-p9rp-2cqv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70596.json"
  },
  "details": "Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.",
  "id": "CVE-2026-70596",
  "modified": "2026-08-12T03:51:20.621961553Z",
  "published": "2026-08-05T14:40:12.295Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70596.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70596"
    },
    {
      "type": "FIX",
      "url": "https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/TryGhost/Ghost/pull/29635"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ghost: Cross-Site Scripting in Feature Image Captions"
}