GO-2026-6516 AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body in github.com/anycable/anycable-go

AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body in github.com/anycable/anycable-go. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this i...

AnyCable: Pusher REST API Does Not Verify Request Body MD5 Enabling Signed-Request Replay with Arbitrary Body

Summary The Pusher-compatible REST API includes bodymd5 in the HMAC signature string but never computes or verifies the MD5 of the received HTTP body, allowing anyone who observes a signed request to replay it with an entirely different body. Details In pusher/http.go, the Handler function extrac...