# CVE-2026-105651: Ghost stored cross-site scripting in bookmark card images

Source: https://junglewise.ai/threats/cve-2026-104413-ghost-from-5-94-0-before-6-64-0-contains-a-stored-cross-site  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-02. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-105651 · Severity: high · CVSS 7.3 · Published 2026-10-02

Ghost is a popular blogging and content management platform. A vulnerability in versions 5.94.0 through 6.63.0 allows staff members, including low-privilege Contributors, to host malicious HTML code by uploading non-image files through bookmark card creation. An attacker with staff access can exploit this to hijack other staff members' admin sessions and take over the Ghost instance.

Technologies: [Ghost](https://junglewise.ai/threats/technologies/ghost-ghost), [ghost (npm)](https://junglewise.ai/threats/technologies/ghost). Vendors: [Ghost](https://junglewise.ai/threats/vendors/ghost), [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-105651 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105651 being exploited in the wild.

**How severe is CVE-2026-105651?** High severity, with a CVSS score of 7.3, published 2 October 2026.

**Which products and versions are affected?** Ghost 5.94.0 to 6.63.0; ghost (npm) SEMVER:introduced=5.94.0,fixed=6.64.0.

**Is there a fix for CVE-2026-105651?** Yes. ghost (npm): upgrade to 6.64.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-105651 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-105651?** Check whether you run Ghost or ghost (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- ghost (npm): upgrade to 6.64.0 or later

  ```sh
  npm install ghost@6.64.0
  ```


## Technical details

A stored XSS vulnerability exists in Ghost's bookmark card feature where non-image files fetched from external websites are incorrectly stored as card icons or thumbnails without proper validation. Any authenticated staff user, including Contributors with low privileges, can create a malicious bookmark card that serves arbitrary HTML on the site's domain to compromise other staff users' sessions. The attack requires user interaction (a victim must view the malicious card) and relies on improper input sanitization and file type validation.

## Affected products

- Ghost Ghost 5.94.0 to 6.63.0

## Identifiers

- CVE-2026-105651
- CVE-2026-104413
- GHSA-347q-26qq-h2p6

## Timeline

- 2026-09-17: disclosed
- 2026-10-02: advisory

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-347q-26qq-h2p6](https://github.com/TryGhost/Ghost/security/advisories/GHSA-347q-26qq-h2p6)
- [https://www.vulncheck.com/advisories/ghost-5.94.0-before-6.64.0-stored-xss-via-bookmark-card-images](https://www.vulncheck.com/advisories/ghost-5.94.0-before-6.64.0-stored-xss-via-bookmark-card-images)

## Related threats

- [Ghost: Path Traversal Vulnerability in Ghost ImageSize Service](https://junglewise.ai/threats/cve-2026-105683-ghost-is-a-node-js-content-management-system-from-6-14-0-until-6)
- [Ghost: Server-Side Request Forgery in Webhook Trigger](https://junglewise.ai/threats/cve-2026-105682-ghost-is-a-node-js-content-management-system-from-1-18-0-until-6)
- [Ghost input validation bypass in comments access control](https://junglewise.ai/threats/cve-2026-105681-ghost-is-a-node-js-content-management-system-from-5-9-0-until-6)
- [Ghost authorization bypass in post deletion](https://junglewise.ai/threats/cve-2026-105680-ghost-is-a-node-js-content-management-system-from-5-81-0-until-6)
- [Ghost content type validation bypass in local file storage](https://junglewise.ai/threats/cve-2026-105679-ghost-is-a-node-js-content-management-system-from-6-22-1-until-6)