diff --git a/docs/generators/cpp-qt5-client.md b/docs/generators/cpp-qt5-client.md
index 282c674f9edd..02ea56a5c436 100644
--- a/docs/generators/cpp-qt5-client.md
+++ b/docs/generators/cpp-qt5-client.md
@@ -236,7 +236,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |ApiKey|✓|OAS2,OAS3
 |OpenIDConnect|✗|OAS3
 |BearerToken|✓|OAS3
-|OAuth2_Implicit|✗|OAS2,OAS3
+|OAuth2_Implicit|✓|OAS2,OAS3
 |OAuth2_Password|✗|OAS2,OAS3
 |OAuth2_ClientCredentials|✗|OAS2,OAS3
 |OAuth2_AuthorizationCode|✗|OAS2,OAS3
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQt5ClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQt5ClientCodegen.java
index bda75d399c29..69c77a97eeb1 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQt5ClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQt5ClientCodegen.java
@@ -46,6 +46,7 @@ public CppQt5ClientCodegen() {
         .includeSecurityFeatures(SecurityFeature.BasicAuth)
         .includeSecurityFeatures(SecurityFeature.ApiKey)
         .includeSecurityFeatures(SecurityFeature.BearerToken)
+        .includeSecurityFeatures(SecurityFeature.OAuth2_Implicit)
         .includeGlobalFeatures(GlobalFeature.ParameterStyling)
         );
 
diff --git a/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-body.mustache b/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-body.mustache
index 855560a0b0d7..47e5aa1d2317 100644
--- a/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-body.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-body.mustache
@@ -83,6 +83,10 @@ void {{classname}}::setBearerToken(const QString &token){
     _bearerToken = token;
 }
 
+void {{classname}}::setOauthToken(const QString &token){
+    _oauthToken = token;
+}
+
 void {{classname}}::setUsername(const QString &username) {
     _username = username;
 }
@@ -249,7 +253,10 @@ void {{classname}}::{{nickname}}({{#allParams}}{{#required}}const {{{dataType}}}
         QByteArray b64;
         b64.append(_username.toUtf8() + ":" + _password.toUtf8());
         addHeaders("Authorization","Basic " + b64.toBase64());
-    }{{/isBasicBasic}}{{/authMethods}}
+    }{{/isBasicBasic}}{{#isOAuth}}
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    {{/isOAuth}}{{/authMethods}}
 
     {{#pathParams}}
     {{^required}}if(!{{paramName}}.isNull()){{/required}}
diff --git a/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-header.mustache b/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-header.mustache
index ec9228f4f6ab..ccfabaa2033f 100644
--- a/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-qt5-client/api-header.mustache
@@ -31,6 +31,7 @@ public:
     void setServerIndex(const QString &operation, int serverIndex);
     void setApiKey(const QString &apiKeyName, const QString &apiKey);
     void setBearerToken(const QString &token);
+    void setOauthToken(const QString &token);
     void setUsername(const QString &username);
     void setPassword(const QString &password);
     void setTimeOut(const int timeOut);
@@ -65,6 +66,7 @@ private:
     QMap<QString,QList<{{prefix}}ServerConfiguration>> _serverConfigs;
     QMap<QString, QString> _apiKeys;
     QString _bearerToken;
+    QString _oauthToken;
     QString _username;
     QString _password;
     int _timeOut;
diff --git a/samples/client/petstore/cpp-qt5/client/PFXPetApi.cpp b/samples/client/petstore/cpp-qt5/client/PFXPetApi.cpp
index 79cad8362a57..c6c991e50564 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXPetApi.cpp
+++ b/samples/client/petstore/cpp-qt5/client/PFXPetApi.cpp
@@ -89,6 +89,10 @@ void PFXPetApi::setBearerToken(const QString &token){
     _bearerToken = token;
 }
 
+void PFXPetApi::setOauthToken(const QString &token){
+    _oauthToken = token;
+}
+
 void PFXPetApi::setUsername(const QString &username) {
     _username = username;
 }
@@ -234,6 +238,9 @@ QString PFXPetApi::getParamStyleDelimiter(QString style, QString name, bool isEx
 void PFXPetApi::addPet(const PFXPet &body) {
     QString fullPath = QString(_serverConfigs["addPet"][_serverIndices.value("addPet")].URL()+"/pet");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
 
     PFXHttpRequestWorker *worker = new PFXHttpRequestWorker(this, _manager);
     worker->setTimeOut(_timeOut);
@@ -275,6 +282,20 @@ void PFXPetApi::addPetCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::deletePet(const qint64 &pet_id, const QVariant &api_key) {
     QString fullPath = QString(_serverConfigs["deletePet"][_serverIndices.value("deletePet")].URL()+"/pet/{petId}");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
+    QString pet_idPathParam("{");
+    pet_idPathParam.append("petId").append("}");
+    QString pathPrefix, pathSuffix, pathDelimiter;
+    QString pathStyle = "";    
+    if(pathStyle == "") 
+        pathStyle = "simple";
+    pathPrefix = getParamStylePrefix(pathStyle);
+    pathSuffix = getParamStyleSuffix(pathStyle);
+    pathDelimiter = getParamStyleDelimiter(pathStyle, "petId", false);
+    QString paramString = (pathStyle == "matrix") ? pathPrefix+"petId"+pathSuffix : pathPrefix;
+    fullPath.replace(pet_idPathParam, paramString+QUrl::toPercentEncoding(::test_namespace::toStringValue(pet_id)));
 
     
     {
@@ -334,6 +355,9 @@ void PFXPetApi::deletePetCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::findPetsByStatus(const QList<QString> &status) {
     QString fullPath = QString(_serverConfigs["findPetsByStatus"][_serverIndices.value("findPetsByStatus")].URL()+"/pet/findByStatus");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
 
     QString queryPrefix, querySuffix, queryDelimiter, queryStyle;
     
@@ -469,6 +493,9 @@ void PFXPetApi::findPetsByStatusCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::findPetsByTags(const QList<QString> &tags) {
     QString fullPath = QString(_serverConfigs["findPetsByTags"][_serverIndices.value("findPetsByTags")].URL()+"/pet/findByTags");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
 
     QString queryPrefix, querySuffix, queryDelimiter, queryStyle;
     
@@ -662,6 +689,9 @@ void PFXPetApi::getPetByIdCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::updatePet(const PFXPet &body) {
     QString fullPath = QString(_serverConfigs["updatePet"][_serverIndices.value("updatePet")].URL()+"/pet");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
 
     PFXHttpRequestWorker *worker = new PFXHttpRequestWorker(this, _manager);
     worker->setTimeOut(_timeOut);
@@ -703,6 +733,20 @@ void PFXPetApi::updatePetCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::updatePetWithForm(const qint64 &pet_id, const QVariant &name, const QVariant &status) {
     QString fullPath = QString(_serverConfigs["updatePetWithForm"][_serverIndices.value("updatePetWithForm")].URL()+"/pet/{petId}");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
+    QString pet_idPathParam("{");
+    pet_idPathParam.append("petId").append("}");
+    QString pathPrefix, pathSuffix, pathDelimiter;
+    QString pathStyle = "";    
+    if(pathStyle == "") 
+        pathStyle = "simple";
+    pathPrefix = getParamStylePrefix(pathStyle);
+    pathSuffix = getParamStyleSuffix(pathStyle);
+    pathDelimiter = getParamStyleDelimiter(pathStyle, "petId", false);
+    QString paramString = (pathStyle == "matrix") ? pathPrefix+"petId"+pathSuffix : pathPrefix;
+    fullPath.replace(pet_idPathParam, paramString+QUrl::toPercentEncoding(::test_namespace::toStringValue(pet_id)));
 
     
     {
@@ -768,6 +812,20 @@ void PFXPetApi::updatePetWithFormCallback(PFXHttpRequestWorker *worker) {
 void PFXPetApi::uploadFile(const qint64 &pet_id, const QVariant &additional_metadata, const QVariant &file) {
     QString fullPath = QString(_serverConfigs["uploadFile"][_serverIndices.value("uploadFile")].URL()+"/pet/{petId}/uploadImage");
     
+    if(!_oauthToken.isEmpty())
+        addHeaders("Authorization", "Bearer " + _oauthToken);
+    
+    QString pet_idPathParam("{");
+    pet_idPathParam.append("petId").append("}");
+    QString pathPrefix, pathSuffix, pathDelimiter;
+    QString pathStyle = "";    
+    if(pathStyle == "") 
+        pathStyle = "simple";
+    pathPrefix = getParamStylePrefix(pathStyle);
+    pathSuffix = getParamStyleSuffix(pathStyle);
+    pathDelimiter = getParamStyleDelimiter(pathStyle, "petId", false);
+    QString paramString = (pathStyle == "matrix") ? pathPrefix+"petId"+pathSuffix : pathPrefix;
+    fullPath.replace(pet_idPathParam, paramString+QUrl::toPercentEncoding(::test_namespace::toStringValue(pet_id)));
 
     
     {
diff --git a/samples/client/petstore/cpp-qt5/client/PFXPetApi.h b/samples/client/petstore/cpp-qt5/client/PFXPetApi.h
index 93fcee1b7fab..97569f6fc91a 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXPetApi.h
+++ b/samples/client/petstore/cpp-qt5/client/PFXPetApi.h
@@ -41,6 +41,7 @@ class PFXPetApi : public QObject {
     void setServerIndex(const QString &operation, int serverIndex);
     void setApiKey(const QString &apiKeyName, const QString &apiKey);
     void setBearerToken(const QString &token);
+    void setOauthToken(const QString &token);
     void setUsername(const QString &username);
     void setPassword(const QString &password);
     void setTimeOut(const int timeOut);
@@ -108,6 +109,7 @@ class PFXPetApi : public QObject {
     QMap<QString,QList<PFXServerConfiguration>> _serverConfigs;
     QMap<QString, QString> _apiKeys;
     QString _bearerToken;
+    QString _oauthToken;
     QString _username;
     QString _password;
     int _timeOut;
diff --git a/samples/client/petstore/cpp-qt5/client/PFXStoreApi.cpp b/samples/client/petstore/cpp-qt5/client/PFXStoreApi.cpp
index e8e8c4a94c2f..f1ee34e106c2 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXStoreApi.cpp
+++ b/samples/client/petstore/cpp-qt5/client/PFXStoreApi.cpp
@@ -77,6 +77,10 @@ void PFXStoreApi::setBearerToken(const QString &token){
     _bearerToken = token;
 }
 
+void PFXStoreApi::setOauthToken(const QString &token){
+    _oauthToken = token;
+}
+
 void PFXStoreApi::setUsername(const QString &username) {
     _username = username;
 }
diff --git a/samples/client/petstore/cpp-qt5/client/PFXStoreApi.h b/samples/client/petstore/cpp-qt5/client/PFXStoreApi.h
index 8a467731d48b..03faee207ee4 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXStoreApi.h
+++ b/samples/client/petstore/cpp-qt5/client/PFXStoreApi.h
@@ -40,6 +40,7 @@ class PFXStoreApi : public QObject {
     void setServerIndex(const QString &operation, int serverIndex);
     void setApiKey(const QString &apiKeyName, const QString &apiKey);
     void setBearerToken(const QString &token);
+    void setOauthToken(const QString &token);
     void setUsername(const QString &username);
     void setPassword(const QString &password);
     void setTimeOut(const int timeOut);
@@ -80,6 +81,7 @@ class PFXStoreApi : public QObject {
     QMap<QString,QList<PFXServerConfiguration>> _serverConfigs;
     QMap<QString, QString> _apiKeys;
     QString _bearerToken;
+    QString _oauthToken;
     QString _username;
     QString _password;
     int _timeOut;
diff --git a/samples/client/petstore/cpp-qt5/client/PFXUserApi.cpp b/samples/client/petstore/cpp-qt5/client/PFXUserApi.cpp
index 2379544e5213..8633317ab706 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXUserApi.cpp
+++ b/samples/client/petstore/cpp-qt5/client/PFXUserApi.cpp
@@ -89,6 +89,10 @@ void PFXUserApi::setBearerToken(const QString &token){
     _bearerToken = token;
 }
 
+void PFXUserApi::setOauthToken(const QString &token){
+    _oauthToken = token;
+}
+
 void PFXUserApi::setUsername(const QString &username) {
     _username = username;
 }
diff --git a/samples/client/petstore/cpp-qt5/client/PFXUserApi.h b/samples/client/petstore/cpp-qt5/client/PFXUserApi.h
index 8c0751772119..42c592373c6b 100644
--- a/samples/client/petstore/cpp-qt5/client/PFXUserApi.h
+++ b/samples/client/petstore/cpp-qt5/client/PFXUserApi.h
@@ -40,6 +40,7 @@ class PFXUserApi : public QObject {
     void setServerIndex(const QString &operation, int serverIndex);
     void setApiKey(const QString &apiKeyName, const QString &apiKey);
     void setBearerToken(const QString &token);
+    void setOauthToken(const QString &token);
     void setUsername(const QString &username);
     void setPassword(const QString &password);
     void setTimeOut(const int timeOut);
@@ -102,6 +103,7 @@ class PFXUserApi : public QObject {
     QMap<QString,QList<PFXServerConfiguration>> _serverConfigs;
     QMap<QString, QString> _apiKeys;
     QString _bearerToken;
+    QString _oauthToken;
     QString _username;
     QString _password;
     int _timeOut;