http-swagger before 1.2.6 allows XSS via PUT requests, because a file that has been uploaded (via httpSwagger.WrapHandler and webdav.memFile) can subsequently be accessed via a GET request. NOTE: this is independently fixable with respect to CVE-2022-24863, because (if a solution continued to allow PUT requests) large files could have been blocked without blocking JavaScript, or JavaScript could have been blocked without blocking large files.

Impact Allows an attacker to perform a DOS attack consisting of memory exhaustion on the host system.

Patches Yes. Please upgrade to v1.2.6.

Workarounds A workaround is to restrict the path prefix to the "GET" method. As shown below func main() { r := mux.NewRouter()

r.PathPrefix("/swagger/").Handler(httpSwagger.Handler( httpSwagger.URL("http://localhost:1323/swagger/doc.json"), //The url pointing to API definition httpSwagger.DeepLinking(true), httpSwagger.DocExpansion("none"), httpSwagger.DomID("#swagger-ui"), )).Methods(http.MethodGet)

References Reporter dongguangli from https://www.huoxian.cn/ company

For more information If you have any questions or comments about this advisory: Open an issue in http-swagger