CVE-2026-53945
Ghost: Server-side request forgery via DNS rebinding in external request handling
CVSS Score
4.0
EPSS Score
0.0%
EPSS Percentile
0th
Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. This vulnerability is fixed in 6.21.1.
| CWE | CWE-367 CWE-918 |
| Vendor | tryghost |
| Product | ghost |
| Published | Jun 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
TryGhost / Ghost
>= 6.0.9, < 6.21.1