CVE-2026-103290: Ghost Path Traversal Vulnerability in ImageSize Service
Summary
CVE-2026-103290: Ghost: Path Traversal Vulnerability in Ghost ImageSize Service. Affects ghost versions >= 6.14.0, < 6.27.0. Fixed in 6.27.0. How to fix ↓
Also tracked for
- ghost · npm
The same CVE-2026-103290 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Ghost is a popular Node.js content management system designed for professional publishing. It offers a user-friendly interface and powerful features for managing content, making it a preferred choice for many developers and organizations. However, versions 6.14.0 to 6.27.0 of Ghost contain a vulnerability that allows unauthorized access to local files outside intended directories, posing a risk to server security.
Vulnerability Detail
The vulnerability arises from an input validation issue in the Ghost ImageSize service, which may allow staff users to exploit the system and access sensitive local files. This could lead to unauthorized data exposure and potential compromise of server integrity. The flaw is present in versions 6.14.0 through 6.27.0 and has been addressed in version 6.27.0.
How To Fix
Minimum fixed version
6.27.0
This is the first release that contains the fix.
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Workaround
As a temporary measure, you can restrict access to the affected service by modifying your server's configuration to limit user permissions until the package can be updated.
Conclusion
The Ghost path traversal vulnerability (CVE-2026-103290) poses a significant risk to users of versions 6.14.0 to 6.27.0. It is crucial to update to version 6.27.0 or later to mitigate this risk. Additionally, utilizing tools like Vulert can help maintain ongoing security by monitoring for vulnerabilities in your software.
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FAQ
The vulnerability is a path traversal issue that allows unauthorized access to local files on the server.
Versions 6.14.0 to 6.27.0 of Ghost are affected by this vulnerability.
You can use Vulert's playground at Vulert Scanner to check if your application is impacted by this vulnerability without needing to sign up.
Exploitation of this vulnerability could lead to unauthorized access to sensitive files, compromising the security of your server.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities using just a manifest file like package-lock.json.
References
Related vulnerabilities
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