Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, with credentials: true and no explicit origin (the default wildcard), the CORS Middleware reflects the request's Origin and sends Access-Control-Allow-Credentials: true. Any site can then make credentialed cross-origin requests and read the responses, exposing cookie-authenticated endpoints to arbitrary origins. This vulnerability is fixed in 4.12.25.

Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability. A malicious actor with network access to UAG may be able to bypass administrator-configured CORS restrictions to gain access to sensitive networks.