Ghost: Session Fixation in Ghost Admin

{
  "id": "dab2eb32536857c0501e23698b050ddd1a23025c654f822965852f17b0c6f852",
  "url": "https://osv.dev/vulnerability/CVE-2026-70594",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ghost: Session Fixation in Ghost Admin",
    "summary": "Ghost is a Node.js content management system. From 2.2.0 until 6.54.1, Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted. This issue is fixed in version 6.54.1.",
    "evidence": "osv:CVE-2026-70594",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-70594",
      "aliases": [
        "BIT-ghost-2026-70594",
        "CVE-2026-70594",
        "GHSA-7mpp-r37j-x5wh"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tryghost/ghost",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1ec3dfbfab9f916fd8003c72a14eb3bce6aa48ee"
                },
                {
                  "fixed": "94e25d9de158bc10b6a74d9aad75944b1a68ee13"
                },
                {
                  "fixed": "6b1c85c30dd0bacb4d5ffe64fc675ac9342d800c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.2.0"
                      },
                      {
                        "fixed": "6.54.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6b1c85c30dd0bacb4d5ffe64fc675ac9342d800c"
                      }
                    ],
                    "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-2026-70594.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.207395204Z",
      "provider": "osv",
      "references": [
        "https://github.com/TryGhost/Ghost/releases/tag/v6.54.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70594.json",
        "https://github.com/TryGhost/Ghost/security/advisories/GHSA-7mpp-r37j-x5wh",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-70594",
        "https://github.com/TryGhost/Ghost/commit/6b1c85c30dd0bacb4d5ffe64fc675ac9342d800c",
        "https://github.com/TryGhost/Ghost/pull/29634"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-384"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70594.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-70594",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510105,
  "published_at": "2026-08-04T21:53:45.589+00:00"
}