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Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification

Type: advisorySources: OSV

Ghost versions 5.2.0 through versions prior to 6.62.0 allow a remote attacker, without authentication, to abuse the Stripe Checkout flow to attach a paid subscription to an existing member, modify that member's name, and inject content into newsletters sent to the member. Depending on the recipient's email client, the injected content may be rendered, resulting in HTML injection or cross-site scripting (XSS).

Products
ghost
Affected versions
Not specified
Fixed versions
6.62.0
CVEs
CVE-2026-103266
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 12:32 UTC · Revision 1

Source evidence

Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification

core-osv · Original source

Published 9 Oct 2026, 10:44 UTC

Ghost versions 5.2.0 through versions prior to 6.62.0 allow a remote attacker, without authentication, to abuse the Stripe Checkout flow to attach a paid subscription to an existing member, modify that member's name, and inject content into newsletters sent to the member. Depending on the recipient's email client, the injected content may be rendered, resulting in HTML injection or cross-site scripting (XSS).

osv:BIT-ghost-2026-103266

ghost

Fixed versions: 6.62.0

Complete source record
{
  "id": "9a3e797edcff5c01d0d3ec10ae61541adb42f0b2b1a193f4c5993442264f4111",
  "url": "https://osv.dev/vulnerability/BIT-ghost-2026-103266",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification",
    "summary": "Ghost versions 5.2.0 through versions prior to 6.62.0 allow a remote attacker, without authentication, to abuse the Stripe Checkout flow to attach a paid subscription to an existing member, modify that member's name, and inject content into newsletters sent to the member. Depending on the recipient's email client, the injected content may be rendered, resulting in HTML injection or cross-site scripting (XSS).",
    "evidence": "osv:BIT-ghost-2026-103266",
    "products": [
      {
        "name": {
          "value": "ghost",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.62.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "BIT-ghost-2026-103266",
      "aliases": [
        "BIT-ghost-2026-103266",
        "CVE-2026-103266",
        "GHSA-qppx-rw6v-xjqf"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "5.2.0"
                },
                {
                  "fixed": "6.62.0"
                }
              ]
            }
          ],
          "package": {
            "name": "ghost",
            "purl": "pkg:bitnami/ghost",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V4",
              "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/ghost/BIT-ghost-2026-103266.json"
          }
        }
      ],
      "modified": "2026-10-09T12:10:30.415713917Z",
      "provider": "osv",
      "references": [
        "https://github.com/TryGhost/Ghost/security/advisories/GHSA-qppx-rw6v-xjqf",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-103266",
        "https://www.vulncheck.com/advisories/ghost-5.2.0-before-6.62.0-unauthenticated-stripe-checkout-account-modification"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*"
        ],
        "severity": "High"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-103266",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 120732,
  "published_at": "2026-10-09T10:44:44.899+00:00"
}