CVE-2026-70589: Tryghost Ghost

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Ghost is a Node.js content management system. From 4.22.0 until 6.54.1, a missing validation check allowed users to redeem subscription offers that were no longer active. This issue is fixed in version 6.54.1.

Affected products

• Tryghost Ghost: from 4.22.0, before 6.54.1 (fixed in 6.54.1)

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