Unknown · Fast-Poster · CVE-2023-37658
**Name of the Vulnerable Software and Affected Versions**
fast-poster version 2.15.0
**Description**
The issue concerns a Cross Site Scripting (XSS) problem. Specifically, it involves the upload of files, where the check for image files is performed based on binary data but does not strictly verify the file suffix. This weakness is exploited at the "/server/fast.py" endpoint, particularly through the `ApiUploadHandler.post` function, leading to stored XSS. The estimated number of potentially affected devices worldwide is not provided.
**Recommendations**
For fast-poster version 2.15.0, as a temporary workaround, consider disabling the file upload functionality at the `/server/fast.py` endpoint, specifically through the `ApiUploadHandler.post` function, until a patch is available. Restrict access to the `ApiUploadHandler.post` function to minimize the risk of exploitation. Avoid using the file upload feature until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.