# CVE-2026-103273: Ghost staff token authorization bypass in post editing

Source: https://junglewise.ai/threats/cve-2026-103273-ghost-versions-4-3-0-before-6-58-0-contain-an-authentication  
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-2026-103273 · Severity: medium · CVSS 4.3 · Published 2026-10-01

Ghost is a content management system used to publish and manage websites and blogs. Lower-privilege staff members can exploit authentication tokens to edit posts they are not authorized to modify, potentially allowing unauthorized content changes or malicious modifications to published material.

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

## Quick answers

**Is CVE-2026-103273 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103273 being exploited in the wild.

**How severe is CVE-2026-103273?** Medium severity, with a CVSS score of 4.3, published 1 October 2026.

**Which products and versions are affected?** TryGhost Ghost 4.3.0 to before 6.58.0.

**Is there a fix for CVE-2026-103273?** Yes: fixed in v6.58.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103273 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-103273?** 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 v6.58.0

## Technical details

Ghost versions 4.3.0 through 6.57.x contain an incorrect authorization check (CWE-863) in post editing functionality. Staff users with low privileges can use staff tokens to bypass privilege-level restrictions and edit posts beyond their assigned role, requiring network access and valid staff credentials but no user interaction.

## Affected products

- TryGhost Ghost 4.3.0 to before 6.58.0

## Timeline

- 2026-08-20: disclosed: GitHub Security Advisory published
- 2026-10-01: advisory: CVE-2026-103273 published

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj85-wvj2-r86m](https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj85-wvj2-r86m)
- [https://www.vulncheck.com/advisories/ghost-4.3.0-before-6.58.0-incorrect-authorization-via-staff-token](https://www.vulncheck.com/advisories/ghost-4.3.0-before-6.58.0-incorrect-authorization-via-staff-token)

## Related threats

- [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)
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