# CVE-2026-103289: Ghost authorization bypass in comments feature

Source: https://junglewise.ai/threats/cve-2026-103289-ghost-from-5-9-0-before-6-44-1-contains-an-input-validation  
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-2026-103289 · Severity: medium · CVSS 6.5 · Published 2026-10-01

Ghost is a content management platform used to publish and manage websites and blogs. Authenticated members can exploit an input validation flaw in the comments feature to access and view comments they should not have permission to see, potentially exposing sensitive or private discussion data.

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-2026-103289 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103289 being exploited in the wild.

**How severe is CVE-2026-103289?** Medium severity, with a CVSS score of 6.5, published 1 October 2026.

**Which products and versions are affected?** ghost (npm) SEMVER:introduced=5.9.0,fixed=6.44.1; TryGhost Ghost 5.9.0 through 6.44.0.

**Is there a fix for CVE-2026-103289?** Yes. ghost (npm): upgrade to 6.44.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103289 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-103289?** 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 6.44.1 or later

  ```sh
  npm install ghost@6.44.1
  ```


## Technical details

An input validation issue in Ghost's comments feature allows authenticated members to bypass authorization checks and access comments outside their permitted scope. The vulnerability affects the data query logic through improper neutralization of special elements (CWE-943), requiring only low privilege membership and network access with no user interaction needed. Exploitation results in unauthorized disclosure of comment data.

## Affected products

- TryGhost Ghost 5.9.0 through 6.44.0

## Identifiers

- CVE-2026-103289
- CVE-2026-105681
- GHSA-6q6j-f24j-p477

## Timeline

- 2026-08-11: disclosed
- 2026-10-01: advisory

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-6q6j-f24j-p477](https://github.com/TryGhost/Ghost/security/advisories/GHSA-6q6j-f24j-p477)
- [https://www.vulncheck.com/advisories/ghost-5.9.0-before-6.44.1-authorization-bypass-via-comments](https://www.vulncheck.com/advisories/ghost-5.9.0-before-6.44.1-authorization-bypass-via-comments)

## 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)