A2A Java SDK: Android synchronous POST forwards credentials across authorities after incomplete redirect fix
The GHSA-9rhm fix added this safe setting in AndroidA2AHttpClient.createConnection(): connection.setInstanceFollowRedirects(false); The synchronous POST builder later overwrites it: private boolean followRedirects = true; public A2AHttpResponse post() throws IOException { HttpURLConnection connection = createConnection("POST", false); connection.setInstanceFollowRedirects(followRedirects); // … } The second assignment wins. JSONRPCTransport and RestTransport both add interceptor-produced headers and call synchronous post() without setting followRedirects(false). On Android's repackaged OkHttp implementation, a cross-authority redirect strips Authorization but retains nonstandard request headers. …