Vulnerability CVE-2021-4236


Published: 2022-12-27

Description:
Web Sockets do not execute any AuthenticateMethod methods which may be set, leading to a nil pointer dereference if the returned UserData pointer is assumed to be non-nil, or authentication bypass. This issue only affects WebSockets with an AuthenticateMethod hook. Request handlers that do not explicitly use WebSockets are not vulnerable.

 References:
https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f
https://pkg.go.dev/vuln/GO-2021-0107

Copyright 2026, cxsecurity.com

 

Back to Top