CVE-2026-105651 Ghost: Stored XSS via Bookmark Card Images
Attackers can inject malicious HTML via bookmark card images, potentially compromising admin sessions in Ghost CMS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-105651?
CVE-2026-105651 is a high-severity cross-site scripting vulnerability in TryGhost Ghost, published on 5 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, when creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.
Which versions are affected by CVE-2026-105651?
How do I fix CVE-2026-105651?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-105651 being exploited?
There is no known exploitation of CVE-2026-105651 in the wild and no public exploit code.
Sources
Also known as MINI-87qj-x4fj-569r.