Description
Ghost is a Node.js content management system. From version 6.34.0 until 6.67.0, embed cards in the Ghost editor could bypass protections against stored cross-site scripting. Any staff user, including Contributors, could store scripts in post content that ran when another staff user opened the post in the editor, potentially compromising that user’s admin session. Self-hosted sites should leave the new  security.embedPreviewUrl  configuration option at its default value. This issue is fixed in version 6.67.0.
Published: 2026-10-05
Score: 7.3 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 06 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Ghost is a Node.js content management system. From version 6.34.0 until 6.67.0, embed cards in the Ghost editor could bypass protections against stored cross-site scripting. Any staff user, including Contributors, could store scripts in post content that ran when another staff user opened the post in the editor, potentially compromising that user’s admin session. Self-hosted sites should leave the new  security.embedPreviewUrl  configuration option at its default value. This issue is fixed in version 6.67.0.
Title Ghost: Stored XSS via Embed Card Previews
Weaknesses CWE-653
CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-06T16:55:44.069Z

Reserved: 2026-10-05T16:40:39.612Z

Link: CVE-2026-105643

cve-icon Vulnrichment

Updated: 2026-10-06T16:55:28.064Z

cve-icon NVD

Status : Deferred

Published: 2026-10-05T19:17:18.900

Modified: 2026-10-06T17:17:17.913

Link: CVE-2026-105643

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T20:30:22Z

Weaknesses
  • CWE-653

    Improper Isolation or Compartmentalization

  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')