---
id: CVE-2026-70596
title: Ghost is a Node.js content management system
summary: >-
  Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an
  input validation issue allowed any staff user to create a post with content in
  feature_image_caption that could be used to hijack another staff user's Ghost
  Admin …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-79
vendor: ghost
product: ghost
affected:
  - 'ghost >= 4.9.0, < 6.54.1'
patched:
  - ghost 6.54.1
published: '2026-08-05'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70596'
references:
  - url: >-
      https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e
    label: security-advisories@github.com
  - url: 'https://github.com/TryGhost/Ghost/pull/29635'
    label: security-advisories@github.com
  - url: 'https://github.com/TryGhost/Ghost/releases/tag/v6.54.1'
    label: security-advisories@github.com
  - url: 'https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-pr22-p9rp-2cqv'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.0018
epssPercentile: 0.07784
aliases:
  - GHSA-pr22-p9rp-2cqv
ecosystem: npm
ingestedAt: '2026-08-05T14:48:44.215Z'
---

## Overview

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-70596)

Affected packages:

- `ghost >= 4.9.0, < 6.54.1`

Patched in:

- `ghost 6.54.1`

Source: https://github.com/advisories/GHSA-pr22-p9rp-2cqv