# CVE-2026-105679: Ghost content type validation bypass in local file storage

Source: https://junglewise.ai/threats/cve-2026-105679-ghost-is-a-node-js-content-management-system-from-6-22-1-until-6  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-05. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-105679 · Severity: high · CVSS 7.3 · Published 2026-10-05

Ghost is a Node.js content management system used to publish blogs and websites. When configured with the default local storage adapter, Ghost improperly served uploaded files with content types derived from their file extension rather than forcing them to be inert, allowing staff users to upload executable scripts. An attacker with staff credentials could exploit this to host malicious scripts on the site's domain and compromise other staff members' administrative sessions.

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

## Quick answers

**Is CVE-2026-105679 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105679 being exploited in the wild.

**How severe is CVE-2026-105679?** High severity, with a CVSS score of 7.3, published 5 October 2026.

**Which products and versions are affected?** ghost (npm) >= 6.22.1, < 6.64.0; TryGhost Ghost 6.22.1 through 6.63.x.

**Is there a fix for CVE-2026-105679?** Yes: fixed in Ghost 6.64.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-105679 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-105679?** Check whether you run ghost (npm) or TryGhost Ghost 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 Ghost 6.64.0

## Technical details

The vulnerability exists in Ghost versions 6.22.1 through 6.63.x where uploaded files served via the local storage adapter bypass content-type restrictions introduced in version 6.22.1. Files are served with content types derived from their extension instead of being forced to text/plain with X-Content-Type-Options: nosniff, allowing script execution in the browser. The attack requires staff-level upload privileges and affects sites using the default local storage configuration; the fix ensures all uploaded files are served with inert content types regardless of file extension.

## Affected products

- TryGhost Ghost 6.22.1 through 6.63.x

## Identifiers

- CVE-2026-105679
- GHSA-gfjp-2p8f-94qv

## Timeline

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

## References

- [https://github.com/TryGhost/Ghost/commit/58669d5c8b898f8b69c1287c2779b29ecc7eb918](https://github.com/TryGhost/Ghost/commit/58669d5c8b898f8b69c1287c2779b29ecc7eb918)
- [https://github.com/TryGhost/Ghost/pull/30762](https://github.com/TryGhost/Ghost/pull/30762)

## 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 privilege escalation via user role assignment](https://junglewise.ai/threats/cve-2026-105678-ghost-is-a-node-js-content-management-system-from-0-5-0-until-6)