CVE-2025-66480
Directory Traversal in Wildfire IM Upload Allows Remote Code Execution
Publication date: 2026-02-02
Last updated on: 2026-03-03
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wildfirechat | im-server | to 1.4.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-434 | The product allows the upload or transfer of dangerous file types that are automatically processed within its environment. |
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Wildfire IM versions prior to 1.4.3 in the im-server component's file upload functionality. The application does not properly sanitize filenames during file uploads, allowing an attacker to use directory traversal sequences (like ../../) to write arbitrary files anywhere on the server's filesystem where the application has write permissions. This can lead to an attacker uploading malicious files such as scripts or executables, potentially resulting in Remote Code Execution (RCE) and full server compromise.
How can this vulnerability impact me? :
An attacker exploiting this vulnerability can write arbitrary files to the server, including malicious scripts or executables, which can lead to Remote Code Execution (RCE). This means the attacker can fully compromise the server, potentially gaining control over the system, accessing sensitive data, disrupting services, or using the server for further attacks.
What immediate steps should I take to mitigate this vulnerability?
The immediate step to mitigate this vulnerability is to upgrade Wildfire IM to version 1.4.3 or later, where the vulnerability is fixed. Until the upgrade can be performed, restrict access to the /fs endpoint and monitor for any suspicious file upload activity to prevent exploitation.