# CVE-2026-103292: Ghost JSON-LD cross-site scripting in ghost_head helper

Source: https://junglewise.ai/threats/cve-2026-103292-ghost-versions-from-0-5-3-through-versions-prior-to-6-50-0-fail  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-103292 · Severity: high · CVSS 8 · Published 2026-10-01

Ghost is a content management system and blogging platform used to publish websites and newsletters. Versions 0.5.3 through 6.49.x fail to sanitize data in a JSON-LD HTML tag, allowing authenticated users with limited privileges to inject malicious scripts into published pages. When staff members or administrators view an affected page, their sessions could be compromised, enabling account takeover and unauthorized administrative actions.

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

## Quick answers

**Is CVE-2026-103292 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103292 being exploited in the wild.

**How severe is CVE-2026-103292?** High severity, with a CVSS score of 8, published 1 October 2026.

**Which products and versions are affected?** TryGhost Ghost 0.5.3 through 6.49.x.

**Is there a fix for CVE-2026-103292?** Yes: fixed in 6.50.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103292 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-103292?** Check whether you run 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 6.50.0

## Technical details

A cross-site scripting (XSS) vulnerability exists in the {{ghost_head}} helper's JSON-LD tag output, which fails to escape user-supplied data before rendering in HTML. An attacker with authenticated user privileges but limited permissions can inject unescaped script content that executes in the browsers of staff users viewing the published page. The vulnerability requires user interaction (the victim viewing the page) and allows full session compromise of higher-privilege users.

## Affected products

- TryGhost Ghost 0.5.3 through 6.49.x

## Timeline

- 2026-09-08: disclosed: GitHub security advisory published
- 2026-10-01: advisory: CVE-2026-103292 and NVD entry published

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-mp9q-4q6m-44f5](https://github.com/TryGhost/Ghost/security/advisories/GHSA-mp9q-4q6m-44f5)
- [https://www.vulncheck.com/advisories/ghost-0.5.3-before-6.50.0-cross-site-scripting-via-ghost-head](https://www.vulncheck.com/advisories/ghost-0.5.3-before-6.50.0-cross-site-scripting-via-ghost-head)

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