# CVE-2026-103271: Ghost content API authentication bypass in gated posts

Source: https://junglewise.ai/threats/cve-2026-103271-ghost-versions-from-4-0-0-before-6-63-0-contain-a-content-api  
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-2026-103271 · Severity: high · CVSS 7.5 · Published 2026-10-01

Ghost is a publishing platform that creates websites and newsletters for content creators. A vulnerability in versions 4.0.0 through 6.62.x allows attackers to bypass restrictions on paid or members-only content by directly querying the content API without authentication. An attacker can retrieve any restricted posts and access sensitive content that should require a paid subscription or membership.

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

## Quick answers

**Is CVE-2026-103271 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103271 being exploited in the wild.

**How severe is CVE-2026-103271?** High severity, with a CVSS score of 7.5, published 1 October 2026.

**Which products and versions are affected?** Ghost 4.0.0 before 6.63.0.

**Is there a fix for CVE-2026-103271?** Yes: fixed in 6.63.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-103271 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-103271?** Check whether you run 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 6.63.0

## Technical details

The content API in Ghost fails to properly enforce authorization checks for gated posts, allowing unauthenticated API queries to retrieve restricted content. The vulnerability affects versions 4.0.0 to 6.62.x and is exploitable via a network-based attack with no authentication or user interaction required. An attacker gains the ability to read all restricted post content without providing credentials or payment.

## Affected products

- Ghost Ghost 4.0.0 before 6.63.0

## Timeline

- 2026-09-11: disclosed
- 2026-10-01: advisory

## References

- [https://github.com/TryGhost/Ghost/security/advisories/GHSA-rcx7-6m7p-xw5c](https://github.com/TryGhost/Ghost/security/advisories/GHSA-rcx7-6m7p-xw5c)
- [https://www.vulncheck.com/advisories/ghost-4.0.0-before-6.63.0-restricted-content-bypass](https://www.vulncheck.com/advisories/ghost-4.0.0-before-6.63.0-restricted-content-bypass)

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