CVE-2026-105643
Ghost: Stored XSS via Embed Card Previews
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 CWE-653 |
| Vendor | tryghost |
| Product | ghost |
| Published | Oct 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
TryGhost / Ghost
>= 6.34.0, < 6.67.0