CVE-2026-70596: 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…

PriorityP420medium4.3CVSS 3.1

AVNACLPRHUIRSUCLILAL

EPSS

0.32%

22.5th percentile

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

2 ranges

Vendor	Product	Version range	Fixed in
ghost	ghost	>= 4.9.0 < 6.54.1	6.54.1
tryghost	ghost	—	—

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