CVE-2026-103292 Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head
Authenticated users can inject scripts via the ghost_head helper, potentially stealing admin sessions from staff users viewing the page.
- 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-2026-103292?
CVE-2026-103292 is a high-severity cross-site scripting vulnerability in TryGhost Ghost, published on 1 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 versions from 0.5.3 through versions prior to 6.50.0 fail to sanitize the data placed in the JSON-LD HTML tag emitted by the {{ghost_head}} helper. An authenticated user with limited privileges can inject unescaped content that is rendered as script in the published page, potentially leading to compromise of a staff user's admin session when that user views the affected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-103292?
1 open source package ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 0.5.3 | 6.50.0 |
How do I fix CVE-2026-103292?
Upgrade ghost to 6.50.0 or later.
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-2026-103292 being exploited?
There is no known exploitation of CVE-2026-103292 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-103292, GHSA-2549-6x67-jgrp, GHSA-mp9q-4q6m-44f5.