Description
Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.
References3
Metrics
- CVSS 3.1
-
6.6
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L - EPSS — exploit probability
- 0% percentile: 36 · as of 13 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.