The Auth Shim: A Lightweight Architectural Pattern for Integrating Enterprise SSO with Standalone Open-Source Applications
arXiv:2509.03900v1 Announce Type: cross Abstract: Open-source software OSS is widely adopted in enterprise settings, but standalone tools often lack native support for protocols like SAML or OIDC, creating a critical security integration gap. This paper introduces and formalizes the Auth Shim, a lightweight architectural pattern designed to solve this problem. The Auth Shim is a minimal, external proxy service that acts as a compatibility layer, translating requests from an enterprise Identity...