CVE-2026-103290: Path Traversal: '.../...//' in TryGhost Ghost
Ghost versions 6.14.0 through versions prior to 6.27.0 contain a path traversal vulnerability in the ImageSize service. Insufficient input validation of user-supplied file paths may allow authenticated staff users to access local files outside the intended data storage directories on the server.
AI Analysis
Technical Summary
CVE-2026-103290 is a path traversal vulnerability affecting Ghost CMS versions from 6.14.0 up to but not including 6.27.0. The vulnerability exists in the ImageSize service where user-supplied file paths are not properly validated, enabling authenticated staff users to access arbitrary local files on the server outside the designated storage areas.
Potential Impact
An authenticated staff user can exploit this vulnerability to read local files outside the intended directories, potentially exposing sensitive information stored on the server. The vulnerability does not allow privilege escalation or remote code execution based on the available data.
Mitigation Recommendations
A fix is available in Ghost version 6.27.0 and later. Users should upgrade to version 6.27.0 or newer to remediate this vulnerability.
CVE-2026-103290: Path Traversal: '.../...//' in TryGhost Ghost
Description
Ghost versions 6.14.0 through versions prior to 6.27.0 contain a path traversal vulnerability in the ImageSize service. Insufficient input validation of user-supplied file paths may allow authenticated staff users to access local files outside the intended data storage directories on the server.
CVSS v4.0
Score 5.1medium
Affected software
TryGhost
Ghost
pkg:github/tryghost/GhostRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103290 is a path traversal vulnerability affecting Ghost CMS versions from 6.14.0 up to but not including 6.27.0. The vulnerability exists in the ImageSize service where user-supplied file paths are not properly validated, enabling authenticated staff users to access arbitrary local files on the server outside the designated storage areas.
Potential Impact
An authenticated staff user can exploit this vulnerability to read local files outside the intended directories, potentially exposing sensitive information stored on the server. The vulnerability does not allow privilege escalation or remote code execution based on the available data.
Mitigation Recommendations
A fix is available in Ghost version 6.27.0 and later. Users should upgrade to version 6.27.0 or newer to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-30T10:59:26.443Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abe7495a43b0b3b89bd1d12
Added to database: 10/01/2026, 14:56:21 UTC
Last enriched: 10/01/2026, 15:07:55 UTC
Last updated: 10/02/2026, 01:41:31 UTC
Views: 7
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