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Vulnerabilities

Vulnerability · GHSA-qppx-rw6v-xjqf

Unauthenticated Stripe Checkout Allowed Member Account Modification and HTML Injection in Newsletters

Published Sep 3, 2026 · catalog updated Sep 3, 2026 · Unauthenticated Stripe Checkout Allowed

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Open the advisory

Exploitation likelihood is not on this record for GHSA-qppx-rw6v-xjqf. A missing EPSS score is not a low risk. Compare Unauthenticated Stripe Checkout Allowed with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Unauthenticated Stripe Checkout Allowed).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Version ranges on file
Affected products
npm ghost

### Impact A malicious actor could attach a paid subscription to an existing member, modify their name, and inject content into newsletters sent to the member. Depending on the email client, malicious content may have been rendered resulting in HTML injection or Cross-Site Scripting (XSS). ### Vulnerable versions This vulnerability is present in Ghost from v5.2.0 up to v6.62.0 ### Patches v6.62.0 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### References We thank [Himanshu Anand](https://github.com/unknownhad) ([@anand_himanshu](https://twitter.com/anand_himanshu)) for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm ghost>=v5.2.0, <v6.62.0

How to fix GHSA-qppx-rw6v-xjqf

  • Upgrade

    GHSA-qppx-rw6v-xjqf lists a fix boundary at v6.62.0. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in >=v5.2.0 · 1 other packages on the advisory

  • Advisory

    Open the inventory_github record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for GHSA-qppx-rw6v-xjqf. A missing EPSS score is not a low risk. Compare Unauthenticated Stripe Checkout Allowed with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with >=v5.2.0, <v6.62.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS); CWE-863: Incorrect Authorization. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ghost security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2026 · Maintainer security tabs

    Detected

    ### Impact A malicious actor could attach a paid subscription to an existing member, modify their name, and inject content into newsletters sent to the member. Depending on the email client, malicious content may have been rendered resulting in HTML injection or Cross-Site Scripting (XSS). ### Vulnerable versions This vulnerability is present in Ghost from v5.2.0 up to v6.62.0 ### Patches v6.62.0

  2. Sep 3, 2026 · Maintainer security tabs

    Updated

    ### Impact A malicious actor could attach a paid subscription to an existing member, modify their name, and inject content into newsletters sent to the member. Depending on the email client, malicious content may have been rendered resulting in HTML injection or Cross-Site Scripting (XSS). ### Vulnerable versions This vulnerability is present in Ghost from v5.2.0 up to v6.62.0 ### Patches v6.62.0

Sources

  • Maintainer security tabsVendor advisoryGHSA-qppx-rw6v-xjqf

    ### Impact A malicious actor could attach a paid subscription to an existing member, modify their name, and inject content into newsletters sent to the member. Depending on the email client, malicious content may have been rendered resulting in HTML injection or Cross-Site Scripting (XSS). ### Vulnerable versions This vulnerability is present in Ghost from v5.2.0 up to v6.62.0 ### Patches v6.62.0

    github.com

Freshness

Last verified in this catalog Sep 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Maintainer security tabsNov 1, 2026