Summaryinfo

A vulnerability, which was classified as critical, has been found in cmu-sei GHOSTS. The impacted element is an unknown function of the file /api/npcs/{id}/photo. Performing a manipulation of the argument photoLink results in path traversal. This vulnerability is known as CVE-2025-27092. No exploit is available. It is advisable to upgrade the affected component. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability classified as critical has been found in cmu-sei GHOSTS. This affects an unknown functionality of the file /api/npcs/{id}/photo. The manipulation of the argument photoLink with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

GHOSTS is an open source user simulation framework for cyber experimentation, simulation, training, and exercise. A path traversal vulnerability was discovered in GHOSTS version 8.0.0.0 that allows an attacker to access files outside of the intended directory through the photo retrieval endpoint. The vulnerability exists in the /api/npcs/{id}/photo endpoint, which is designed to serve profile photos for NPCs (Non-Player Characters) but fails to properly validate and sanitize file paths. When an NPC is created with a specially crafted photoLink value containing path traversal sequences (../, ..\, etc.), the application processes these sequences without proper sanitization. This allows an attacker to traverse directory structures and access files outside of the intended photo directory, potentially exposing sensitive system files. The vulnerability is particularly severe because it allows reading arbitrary files from the server's filesystem with the permissions of the web application process, which could include configuration files, credentials, or other sensitive data. This issue has been addressed in version 8.2.7.90 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-27092 since 02/18/2025. The exploitability is told to be easy. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 8.2.7.90 eliminates this vulnerability. Applying the patch e69827556a52ff813de00e1017c4b62598d2c887 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• cmu-sei

Name

• GHOSTS

License

• open-source

Website

• Product: https://github.com/cmu-sei/GHOSTS/

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