CVE-2026-104413: Tryghost Ghost

High severity, CVSS 7.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Ghost from 5.94.0 before 6.64.0 contains a stored cross-site scripting vulnerability that allows staff users, including Contributors, to host arbitrary HTML by abusing bookmark card image fetching. Attackers can create bookmark cards that store non-image files from external websites as icons or thumbnails to compromise other staff users' admin sessions.

Affected products

• Tryghost Ghost: from 5.94.0, before 6.64.0 (fixed in 6.64.0)

Published 2026-10-02. Last modified 2026-10-02.