CVE-2026-70593: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TryGhost Ghost
A path traversal vulnerability exists in TryGhost Ghost CMS versions from 0.10.0 up to but not including 6.54.1. This flaw allows a staff user to write files outside the intended uploads directory via custom theme uploads, potentially altering the installation's behavior. The issue is fixed in version 6.54.1.
AI Analysis
Technical Summary
TryGhost Ghost, a Node.js content management system, contains a CWE-22 path traversal vulnerability in custom theme handling that affects versions >=0.10.0 <6.54.1. This vulnerability allows a staff user to write files outside the uploads directory by exploiting improper limitation of pathname in LocalStorageBase and theme storage name handling. The vulnerability could be leveraged to alter the behavior of the Ghost installation. The issue is resolved in version 6.54.1.
Potential Impact
The vulnerability allows an authenticated staff user with high privileges to write files outside the designated uploads directory, which can lead to modification of the installation's behavior. The CVSS score of 6.6 (medium severity) reflects that while there is no confidentiality impact, there is a high integrity impact and low availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade to Ghost version 6.54.1 or later where this vulnerability is fixed. Since no official patch link or advisory is provided, users should verify the upgrade from the vendor's official release notes or repository. No other mitigations are indicated.
CVE-2026-70593: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TryGhost Ghost
Description
A path traversal vulnerability exists in TryGhost Ghost CMS versions from 0.10.0 up to but not including 6.54.1. This flaw allows a staff user to write files outside the intended uploads directory via custom theme uploads, potentially altering the installation's behavior. The issue is fixed in version 6.54.1.
CVSS v3.1
Score 6.6medium
Affected software
TryGhost
Ghost
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
TryGhost Ghost, a Node.js content management system, contains a CWE-22 path traversal vulnerability in custom theme handling that affects versions >=0.10.0 <6.54.1. This vulnerability allows a staff user to write files outside the uploads directory by exploiting improper limitation of pathname in LocalStorageBase and theme storage name handling. The vulnerability could be leveraged to alter the behavior of the Ghost installation. The issue is resolved in version 6.54.1.
Potential Impact
The vulnerability allows an authenticated staff user with high privileges to write files outside the designated uploads directory, which can lead to modification of the installation's behavior. The CVSS score of 6.6 (medium severity) reflects that while there is no confidentiality impact, there is a high integrity impact and low availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade to Ghost version 6.54.1 or later where this vulnerability is fixed. Since no official patch link or advisory is provided, users should verify the upgrade from the vendor's official release notes or repository. No other mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-04T19:50:27.327Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7331b6bf8831d539e5614f
Added to database: 08/05/2026, 12:51:02 UTC
Last enriched: 08/12/2026, 15:51:51 UTC
Last updated: 09/18/2026, 10:01:33 UTC
Views: 68
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