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 5 October 2026.

Which products and versions are affected?

Ghost 5.94.0 to 6.63.x; ghost (npm) >= 5.94.0, < 6.64.0.

Is there a fix for CVE-2026-105651?

Yes: fixed in 6.64.0. 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.

CVE-2026-105651: Ghost CMS arbitrary file storage in bookmark cards

Q: Is there a fix for CVE-2026-105651?

Yes: fixed in 6.64.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-105651 attacked?

It is attacked over the network, in a web application.

Q: 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.

CVE-2026-105651 · Severity: high · CVSS 7.3 · Published 2026-10-05

Ghost is a Node.js-based content management system used to publish websites and blogs. Versions 5.94.0 through 6.63.x allow staff users to upload non-image files (such as HTML) as bookmark icons, which are then stored and served from the site's domain. An attacker with staff access could exploit this to host malicious HTML on the target domain, potentially stealing session cookies or taking over administrator accounts.

Technologies: Ghost, ghost (npm). Vendors: Ghost, 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 5 October 2026.
Which products and versions are affected?: Ghost 5.94.0 to 6.63.x; ghost (npm) >= 5.94.0, < 6.64.0.
Is there a fix for CVE-2026-105651?: Yes: fixed in 6.64.0. 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

Fixed in: 6.64.0

Technical details

Ghost's bookmark card feature fails to validate that fetched files are actually images before storing them, allowing any file type to be saved as an icon or thumbnail. A staff user (including low-privilege Contributors) can trigger this by creating a bookmark card pointing to an external URL that serves non-image content like HTML. The stored files are then served from the site's own domain, enabling stored XSS attacks against other staff members with elevated privileges.

Affected products

Ghost Ghost 5.94.0 to 6.63.x

Identifiers

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

Timeline

2026-10-05: disclosed
2026-09-14: patched

References

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