CVE-2026-29053 Ghost Vulnerable to Remote Code Execution via Malicious Themes
Attackers can execute arbitrary code on Ghost servers by uploading malicious themes, requiring an upgrade to the latest version.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-29053?
CVE-2026-29053 is a high-severity code injection vulnerability in TryGhost Ghost, published on 5 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Ghost is a Node.js content management system. From version 0.7.2 to 6.19.0, specifically crafted malicious themes can execute arbitrary code on the server running Ghost. This issue has been patched in version 6.19.1.
Weakness: CWE-74
Which versions are affected by CVE-2026-29053?
3 open source packages ship an affected version, including ghost. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 0.7.2 | 6.19.1 |
ghost npm | From 0.7.2 | 6.19.1 |
ghost npm | From 0.7.2 | 6.19.1 |
Products include Ghost Ghost.
How do I fix CVE-2026-29053?
Upgrade ghost to 6.19.1 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-29053 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29053 exists.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 2 proofs of concept on GitHub.
Other vulnerabilities in TryGhost Ghost
Sources
Also known as BIT-ghost-2026-29053, GHSA-cgc2-rcrh-qr5x.