CVE-2026-70596: Tryghost Ghost

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.

Affected products

• Tryghost Ghost: from 4.9.0, before 6.54.1 (fixed in 6.54.1)

Published 2026-08-05. Last modified 2026-09-08.