# CVE-2026-104418: Ghost remote code execution via theme translation files

Source: https://junglewise.ai/threats/cve-2026-104418-ghost-from-6-10-3-before-6-64-0-contains-a-remote-code-execution  
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-2026-104418 · Severity: high · CVSS 7.2 · Published 2026-10-02

Ghost is a popular blogging and content management platform. A vulnerability allows an administrator with legitimate access to upload a specially crafted theme that executes arbitrary code on the Ghost server, potentially compromising the entire platform and hosted content. An attacker with admin credentials could gain complete control of the server.

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-2026-104418 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-104418 being exploited in the wild.

**How severe is CVE-2026-104418?** High severity, with a CVSS score of 7.2, published 2 October 2026.

**Which products and versions are affected?** ghost (npm) SEMVER:introduced=6.10.3,fixed=6.64.0; TryGhost Ghost 6.10.3 to 6.63.x.

**Is there a fix for CVE-2026-104418?** 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-2026-104418 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-104418?** 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

- ghost (npm): upgrade to 6.64.0 or later

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


## Technical details

The vulnerability exists in Ghost's theme translation file loading mechanism, which fails to properly validate or sanitize theme files during the loading process. An authenticated administrator can upload a malicious theme containing crafted translation files that exploit path traversal or code injection flaws to execute arbitrary code with server privileges. The vulnerability affects Ghost versions 6.10.3 through 6.63.x and is fixed in version 6.64.0.

## Affected products

- TryGhost Ghost 6.10.3 to 6.63.x

## Identifiers

- CVE-2026-104418
- CVE-2026-105677
- GHSA-jj74-hc2q-xrvm

## Timeline

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

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj74-hc2q-xrvm](https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj74-hc2q-xrvm)
- [https://www.vulncheck.com/advisories/ghost-from-6.10.3-before-6.64.0-rce-via-theme-translation-files](https://www.vulncheck.com/advisories/ghost-from-6.10.3-before-6.64.0-rce-via-theme-translation-files)

## 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)