From 95cb5e2895c42e08830a2a6aa9c884c613cdcf3e Mon Sep 17 00:00:00 2001
From: BeerMonsterDota <obelikc17@gmail.com>
Date: Thu, 13 Mar 2025 23:05:20 +0300
Subject: [PATCH] feat(generic-oauth): allow basic auth (#1808)

---
 packages/better-auth/src/plugins/generic-oauth/index.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/better-auth/src/plugins/generic-oauth/index.ts b/packages/better-auth/src/plugins/generic-oauth/index.ts
index 939aa50fd0..39b3b9be04 100644
--- a/packages/better-auth/src/plugins/generic-oauth/index.ts
+++ b/packages/better-auth/src/plugins/generic-oauth/index.ts
@@ -116,6 +116,11 @@ interface GenericOAuthConfig {
 	 * Disable sign up for new users.
 	 */
 	disableSignUp?: boolean;
+	/**
+	 * Allows to use basic authentication for the token endpoint.
+	 * Default is "post".
+	 */
+	authentication?: "basic" | "post";
 }
 
 interface GenericOAuthOptions {
@@ -234,6 +239,7 @@ export const genericOAuth = (options: GenericOAuthOptions) => {
 								redirectURI: c.redirectURI,
 							},
 							tokenEndpoint: finalTokenUrl,
+							authentication: c.authentication,
 						});
 					},
 					async getUserInfo(tokens) {