CVE-2026-53945
Ghost: Server-side request forgery via DNS rebinding in external request handling
4.0
MEDIUM
CVSS 3.1
EPSS 0.14%
Description
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.
How to fix CVE-2026-53945
To remediate CVE-2026-53945, upgrade the affected package to a fixed version below.
- —upgrade to 6.21.1 or later
Is CVE-2026-53945 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 6.0.9, < 6.21.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N |