CVE-2026-70593
6.6 MEDIUMpublic exploit availablePublished 2026-08-04 · Updated 2026-08-05
AI risk analysis
- Summary
- The vulnerability allows a staff user to write files outside the intended directory via custom themes, potentially altering system behavior.
- Exploitability
- Exploitation requires access as a staff user and knowledge of theme upload path traversal techniques; not trivial but feasible.
- Blast radius
- If exploited, could significantly impact system integrity by allowing unauthorized file writes and modifications.
- Prioritized remediation
- Update to Ghost version 6.54.1 or later to address the vulnerability.
file-writetheme-vulncustom-themecontent-management
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L
Weaknesses
CWE-22
Public exploit & PoC references
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.