---
id: CVE-2026-103266
title: >-
  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 i…
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 i…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N'
cwe:
  - CWE-863
vendor: TryGhost
product: Ghost
affected:
  - Ghost >= 5.2.0 < 6.62.0
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T11:17:21.737'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103266'
references:
  - url: 'https://github.com/TryGhost/Ghost/security/advisories/GHSA-qppx-rw6v-xjqf'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ghost-5.2.0-before-6.62.0-unauthenticated-stripe-checkout-account-modification
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T11:42:53.806Z'
---

## Overview

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).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.