CVE-2026-70593: Tryghost Ghost

Medium severity, CVSS 6.6. EPSS: 0.4% chance of exploitation in the next 30 days.

Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.

Affected products

• Tryghost Ghost: from 0.10.0, before 6.54.1 (fixed in 6.54.1)

Published 2026-08-04. Last modified 2026-09-08.