diff --git a/modules/id5IdSystem.js b/modules/id5IdSystem.js
index bf2365b938c..6dade7d01f0 100644
--- a/modules/id5IdSystem.js
+++ b/modules/id5IdSystem.js
@@ -166,10 +166,11 @@ export const id5IdSubmodule = {
    *  It's permissible to return neither, one, or both fields.
    * @function extendId
    * @param {SubmoduleConfig} config
+   * @param {ConsentData|undefined} consentData
    * @param {Object} cacheIdObj - existing id, if any
    * @return {(IdResponse|function(callback:function))} A response object that contains id and/or callback.
    */
-  extendId(config, cacheIdObj) {
+  extendId(config, consentData, cacheIdObj) {
     const partnerId = (config && config.params && config.params.partner) || 0;
     incrementNb(partnerId);
     return cacheIdObj;
diff --git a/modules/pubCommonIdSystem.js b/modules/pubCommonIdSystem.js
index cb0c07cefa8..339029120a8 100644
--- a/modules/pubCommonIdSystem.js
+++ b/modules/pubCommonIdSystem.js
@@ -136,6 +136,17 @@ function handleResponse(pubcid, callback, config) {
   }
 }
 
+/**
+ * Builds and returns the shared Id URL with attached consent data if applicable
+ * @param {Object} consentData
+ * @return {string}
+ */
+function sharedIdUrl(consentData) {
+  if (!consentData || typeof consentData.gdprApplies !== 'boolean' || !consentData.gdprApplies) return SHAREDID_URL;
+
+  return `${SHAREDID_URL}?gdpr=1&gdpr_consent=${consentData.consentString}`
+}
+
 /**
  * Wraps pixelCallback in order to call sharedid sync
  * @param {string} pubcid Pubcommon id value
@@ -144,12 +155,12 @@ function handleResponse(pubcid, callback, config) {
  * @return {function(...[*]=)}
  */
 
-function getIdCallback(pubcid, pixelCallback, config) {
+function getIdCallback(pubcid, pixelCallback, config, consentData) {
   return function (callback) {
     if (typeof pixelCallback === 'function') {
       pixelCallback();
     }
-    ajax(SHAREDID_URL, handleResponse(pubcid, callback, config), undefined, {method: 'GET', withCredentials: true});
+    ajax(sharedIdUrl(consentData), handleResponse(pubcid, callback, config), undefined, {method: 'GET', withCredentials: true});
   }
 }
 
@@ -227,7 +238,7 @@ export const pubCommonIdSubmodule = {
     }
 
     const pixelCallback = this.makeCallback(pixelUrl, newId);
-    const combinedCallback = enableSharedId ? getIdCallback(newId, pixelCallback, config) : pixelCallback;
+    const combinedCallback = enableSharedId ? getIdCallback(newId, pixelCallback, config, consentData) : pixelCallback;
 
     return {id: newId, callback: combinedCallback};
   },
@@ -247,10 +258,11 @@ export const pubCommonIdSubmodule = {
    *
    * @function
    * @param {SubmoduleParams} [config]
+   * @param {ConsentData|undefined} consentData
    * @param {Object} storedId existing id
    * @returns {IdResponse|undefined}
    */
-  extendId: function(config = {}, storedId) {
+  extendId: function(config = {}, consentData, storedId) {
     const {params: {extend = false, pixelUrl, enableSharedId = SHAREDID_DEFAULT_STATE} = {}} = config;
 
     if (extend) {
diff --git a/modules/sharedIdSystem.js b/modules/sharedIdSystem.js
index 49cac46f1df..762454af5fa 100644
--- a/modules/sharedIdSystem.js
+++ b/modules/sharedIdSystem.js
@@ -276,6 +276,17 @@ function detectPrng(root) {
   return () => Math.random();
 }
 
+/**
+ * Builds and returns the shared Id URL with attached consent data if applicable
+ * @param {Object} consentData
+ * @return {string}
+ */
+function sharedIdUrl(consentData) {
+  if (!consentData || typeof consentData.gdprApplies !== 'boolean' || !consentData.gdprApplies) return ID_SVC;
+
+  return `${ID_SVC}?gdpr=1&gdpr_consent=${consentData.consentString}`
+}
+
 /** @type {Submodule} */
 export const sharedIdSubmodule = {
   /**
@@ -303,12 +314,13 @@ export const sharedIdSubmodule = {
    * performs action to obtain id and return a value.
    * @function
    * @param {SubmoduleConfig} [config]
+   * @param {ConsentData|undefined} consentData
    * @returns {sharedId}
    */
-  getId(config) {
+  getId(config, consentData) {
     const resp = function (callback) {
       utils.logInfo('SharedId: Sharedid doesnt exists, new cookie creation');
-      ajax(ID_SVC, idGenerationCallback(callback), undefined, {method: 'GET', withCredentials: true});
+      ajax(sharedIdUrl(consentData), idGenerationCallback(callback), undefined, {method: 'GET', withCredentials: true});
     };
     return {callback: resp};
   },
@@ -316,10 +328,11 @@ export const sharedIdSubmodule = {
   /**
    * performs actions even if the id exists and returns a value
    * @param config
+   * @param consentData
    * @param storedId
    * @returns {{callback: *}}
    */
-  extendId(config, storedId) {
+  extendId(config, consentData, storedId) {
     const configParams = (config && config.params) || {};
     utils.logInfo('SharedId: Existing shared id ' + storedId.id);
     const resp = function (callback) {
@@ -329,7 +342,7 @@ export const sharedIdSubmodule = {
         const sharedIdPayload = {};
         sharedIdPayload.sharedId = storedId.id;
         const payloadString = JSON.stringify(sharedIdPayload);
-        ajax(ID_SVC, existingIdCallback(storedId, callback), payloadString, {method: 'POST', withCredentials: true});
+        ajax(sharedIdUrl(consentData), existingIdCallback(storedId, callback), payloadString, {method: 'POST', withCredentials: true});
       }
     };
     return {callback: resp};
diff --git a/modules/userId/index.js b/modules/userId/index.js
index 9294311de69..da2c7b225fa 100644
--- a/modules/userId/index.js
+++ b/modules/userId/index.js
@@ -28,6 +28,7 @@
  *  It's permissible to return neither, one, or both fields.
  * @name Submodule#extendId
  * @param {SubmoduleConfig} config
+ * @param {ConsentData|undefined} consentData
  * @param {Object} storedId - existing id, if any
  * @return {(IdResponse|function(callback:function))} A response object that contains id and/or callback.
  */
@@ -621,7 +622,7 @@ function populateSubmoduleId(submodule, consentData, storedConsentData, forceRef
       response = submodule.submodule.getId(submodule.config, consentData, storedId);
     } else if (typeof submodule.submodule.extendId === 'function') {
       // If the id exists already, give submodule a chance to decide additional actions that need to be taken
-      response = submodule.submodule.extendId(submodule.config, storedId);
+      response = submodule.submodule.extendId(submodule.config, consentData, storedId);
     }
 
     if (utils.isPlainObject(response)) {
diff --git a/test/spec/modules/sharedIdSystem_spec.js b/test/spec/modules/sharedIdSystem_spec.js
new file mode 100644
index 00000000000..904d6fe1c78
--- /dev/null
+++ b/test/spec/modules/sharedIdSystem_spec.js
@@ -0,0 +1,55 @@
+import {
+  sharedIdSubmodule,
+} from 'modules/sharedIdSystem.js';
+import { server } from 'test/mocks/xhr.js';
+
+let expect = require('chai').expect;
+
+describe('SharedId System', function() {
+  const SHAREDID_RESPONSE = {sharedId: 'testsharedid'};
+
+  describe('Xhr Requests from getId()', function() {
+    let callbackSpy = sinon.spy();
+
+    beforeEach(function() {
+      callbackSpy.resetHistory();
+    });
+
+    afterEach(function () {
+
+    });
+
+    it('should call shared id endpoint without consent data and handle a valid response', function () {
+      let submoduleCallback = sharedIdSubmodule.getId(undefined, undefined).callback;
+      submoduleCallback(callbackSpy);
+
+      let request = server.requests[0];
+      expect(request.url).to.equal('https://id.sharedid.org/id');
+      expect(request.withCredentials).to.be.true;
+
+      request.respond(200, {}, JSON.stringify(SHAREDID_RESPONSE));
+
+      expect(callbackSpy.calledOnce).to.be.true;
+      expect(callbackSpy.lastCall.lastArg.id).to.equal(SHAREDID_RESPONSE.sharedId);
+    });
+
+    it('should call shared id endpoint with consent data and handle a valid response', function () {
+      let consentData = {
+        gdprApplies: true,
+        consentString: 'abc12345234',
+      };
+
+      let submoduleCallback = sharedIdSubmodule.getId(undefined, consentData).callback;
+      submoduleCallback(callbackSpy);
+
+      let request = server.requests[0];
+      expect(request.url).to.equal('https://id.sharedid.org/id?gdpr=1&gdpr_consent=abc12345234');
+      expect(request.withCredentials).to.be.true;
+
+      request.respond(200, {}, JSON.stringify(SHAREDID_RESPONSE));
+
+      expect(callbackSpy.calledOnce).to.be.true;
+      expect(callbackSpy.lastCall.lastArg.id).to.equal(SHAREDID_RESPONSE.sharedId);
+    });
+  });
+});
diff --git a/test/spec/modules/userId_spec.js b/test/spec/modules/userId_spec.js
index ed592c0cba5..0fcf03dde67 100644
--- a/test/spec/modules/userId_spec.js
+++ b/test/spec/modules/userId_spec.js
@@ -2037,6 +2037,8 @@ describe('User ID', function () {
       coreStorage.setCookie('pubcid_sharedid', '', EXPIRED_COOKIE_DATE);
       coreStorage.setCookie('unifiedid', '', EXPIRED_COOKIE_DATE);
       coreStorage.setCookie('_parrable_eid', '', EXPIRED_COOKIE_DATE);
+      resetConsentData();
+      delete window.__tcfapi;
     });
 
     it('pubcid callback with url', function () {
@@ -2171,6 +2173,57 @@ describe('User ID', function () {
       expect(server.requests[0].url).to.equal('https://id.sharedid.org/id');
       expect(coreStorage.getCookie('pubcid_sharedid')).to.be.null;
     });
+
+    it('verify sharedid called with consent data when gdpr applies', function () {
+      let adUnits = [getAdUnitMock()];
+      let customCfg = getConfigMock(['pubCommonId', 'pubcid', 'cookie']);
+      let consentConfig = {
+        cmpApi: 'iab',
+        timeout: 7500,
+        allowAuctionWithoutConsent: false
+      };
+      customCfg = addConfig(customCfg, 'params', {pixelUrl: '/any/pubcid/url', enableSharedId: true});
+
+      server.respondWith('https://id.sharedid.org/id?gdpr=1&gdpr_consent=abc12345234', function(xhr) {
+        xhr.respond(200, {}, '{"sharedId":"testsharedid"}');
+      });
+      server.respondImmediately = true;
+
+      let testConsentData = {
+        tcString: 'abc12345234',
+        gdprApplies: true,
+        purposeOneTreatment: false,
+        eventStatus: 'tcloaded',
+        vendor: {consents: {887: true}},
+        purpose: {
+          consents: {
+            1: true
+          }
+        }
+      };
+
+      window.__tcfapi = function () { };
+      sinon.stub(window, '__tcfapi').callsFake((...args) => {
+        args[2](testConsentData, true);
+      });
+
+      setSubmoduleRegistry([pubCommonIdSubmodule]);
+      init(config);
+      config.setConfig(customCfg);
+      setConsentConfig(consentConfig);
+
+      consentManagementRequestBidsHook(() => {
+      }, {});
+      requestBidsHook((config) => {
+      }, {adUnits});
+
+      expect(utils.triggerPixel.called).to.be.false;
+      events.emit(CONSTANTS.EVENTS.AUCTION_END, {});
+      expect(utils.triggerPixel.getCall(0).args[0]).to.include('/any/pubcid/url');
+
+      expect(server.requests[0].url).to.equal('https://id.sharedid.org/id?gdpr=1&gdpr_consent=abc12345234');
+      expect(coreStorage.getCookie('pubcid_sharedid')).to.equal('testsharedid');
+    });
   });
 
   describe('Set cookie behavior', function () {