diff --git a/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache b/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
index 332760455bf..bfb303e741e 100644
--- a/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
@@ -75,8 +75,12 @@ export class {{#lambda.pascalcase}}{{name}}{{/lambda.pascalcase}}Authentication
     public constructor({{#useInversify}}@inject(AbstractTokenProvider) @named("{{name}}") {{/useInversify}}private tokenProvider: TokenProvider) {}
     {{/isBasicBearer}}
     {{#isOAuth}}
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
     {{/isOAuth}}
 
     public getName(): string {
@@ -95,7 +99,7 @@ export class {{#lambda.pascalcase}}{{name}}{{/lambda.pascalcase}}Authentication
         context.setHeaderParam("Authorization", "Bearer " + await this.tokenProvider.getToken());
         {{/isBasicBearer}}
         {{#isOAuth}}
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
         {{/isOAuth}}
     }
 }
@@ -119,7 +123,7 @@ export const authMethodServices = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     {{#authMethods}}
@@ -152,6 +156,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
             config["{{name}}"]["tokenProvider"]
             {{/isBasicBearer}}
             {{#isOAuth}}
+            config["{{name}}"]["accessToken"]
             {{/isOAuth}}
         );
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
index 9d59a0a2558..1f1d1ecac67 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
@@ -48,15 +48,19 @@ export class ApiKeyAuthentication implements SecurityAuthentication {
  * Applies oauth2 authentication to the request context.
  */
 export class PetstoreAuthAuthentication implements SecurityAuthentication {
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
 
     public getName(): string {
         return "petstore_auth";
     }
 
     public applySecurityAuthentication(context: RequestContext) {
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
     }
 }
 
@@ -69,7 +73,7 @@ export type AuthMethods = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     "api_key"?: ApiKeyConfiguration,
@@ -95,6 +99,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
 
     if (config["petstore_auth"]) {
         authMethods["petstore_auth"] = new PetstoreAuthAuthentication(
+            config["petstore_auth"]["accessToken"]
         );
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
index 0a02d2e58d2..e7609dabbec 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
@@ -46,15 +46,19 @@ export class ApiKeyAuthentication implements SecurityAuthentication {
  * Applies oauth2 authentication to the request context.
  */
 export class PetstoreAuthAuthentication implements SecurityAuthentication {
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
 
     public getName(): string {
         return "petstore_auth";
     }
 
     public applySecurityAuthentication(context: RequestContext) {
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
     }
 }
 
@@ -67,7 +71,7 @@ export type AuthMethods = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     "api_key"?: ApiKeyConfiguration,
@@ -93,6 +97,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
 
     if (config["petstore_auth"]) {
         authMethods["petstore_auth"] = new PetstoreAuthAuthentication(
+            config["petstore_auth"]["accessToken"]
         );
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/auth/auth.ts
index 13e3b17fa82..f6ffebc4d7e 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/auth/auth.ts
@@ -56,15 +56,19 @@ export class ApiKeyAuthentication implements SecurityAuthentication {
  */
 @injectable()
 export class PetstoreAuthAuthentication implements SecurityAuthentication {
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
 
     public getName(): string {
         return "petstore_auth";
     }
 
     public applySecurityAuthentication(context: RequestContext) {
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
     }
 }
 
@@ -82,7 +86,7 @@ export const authMethodServices = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     "api_key"?: ApiKeyConfiguration,
@@ -108,6 +112,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
 
     if (config["petstore_auth"]) {
         authMethods["petstore_auth"] = new PetstoreAuthAuthentication(
+            config["petstore_auth"]["accessToken"]
         );
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
index 2cdf0800f32..d8924a4216c 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
@@ -46,15 +46,19 @@ export class ApiKeyAuthentication implements SecurityAuthentication {
  * Applies oauth2 authentication to the request context.
  */
 export class PetstoreAuthAuthentication implements SecurityAuthentication {
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
 
     public getName(): string {
         return "petstore_auth";
     }
 
     public applySecurityAuthentication(context: RequestContext) {
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
     }
 }
 
@@ -67,7 +71,7 @@ export type AuthMethods = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     "api_key"?: ApiKeyConfiguration,
@@ -93,6 +97,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
 
     if (config["petstore_auth"]) {
         authMethods["petstore_auth"] = new PetstoreAuthAuthentication(
+            config["petstore_auth"]["accessToken"]
         );
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
index 9d59a0a2558..1f1d1ecac67 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
@@ -48,15 +48,19 @@ export class ApiKeyAuthentication implements SecurityAuthentication {
  * Applies oauth2 authentication to the request context.
  */
 export class PetstoreAuthAuthentication implements SecurityAuthentication {
-    // TODO: How to handle oauth2 authentication!
-    public constructor() {}
+    /**
+     * Configures OAuth2 with the necessary properties
+     *
+     * @param accessToken: The access token to be used for every request
+     */
+    public constructor(private accessToken: string) {}
 
     public getName(): string {
         return "petstore_auth";
     }
 
     public applySecurityAuthentication(context: RequestContext) {
-        // TODO
+        context.setHeaderParam("Authorization", "Bearer " + this.accessToken);
     }
 }
 
@@ -69,7 +73,7 @@ export type AuthMethods = {
 export type ApiKeyConfiguration = string;
 export type HttpBasicConfiguration = { "username": string, "password": string };
 export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
-export type OAuth2Configuration = string;
+export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
     "api_key"?: ApiKeyConfiguration,
@@ -95,6 +99,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
 
     if (config["petstore_auth"]) {
         authMethods["petstore_auth"] = new PetstoreAuthAuthentication(
+            config["petstore_auth"]["accessToken"]
         );
     }