Improper Isolation or Compartmentalization Affecting ghost package, versions >=6.34.0 <6.67.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-GHOST-21246269
- published19 Oct 2026
- disclosed7 Oct 2026
- creditNguyễn Quốc Đồng, Pedro Pinho
Introduced: 7 Oct 2026
NewCVE-2026-105643 (opens in a new tab)How to fix?
Upgrade ghost to version 6.67.0 or higher.
Overview
ghost is a publishing platform
Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization via embed card previews in the Ghost editor, which bypass the prior fix for GHSA-8vhf-xxpj-4qrg. Any staff user, including those with the Contributor role, can store malicious scripts in post content that execute when another staff user opens the affected post in the editor, potentially resulting in compromise of that user's admin session.