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OpenAdvisories
High · 7.3 CVE-2026-105643 BIT-ghost-2026-105643EUVD-2026-92632GHSA-69qc-f5m6-889c

Ghost: Stored XSS via Embed Card Previews

Published Oct 5, 2026 · Updated Oct 6, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
TryGhost Ghost >= 6.34.0, < 6.67.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm ghost >= 6.34.0, < 6.67.0 6.67.0 GHSA-69qc-f5m6-889c

References