diff --git a/modules/adbutlerBidAdapter.js b/modules/adbutlerBidAdapter.js
index f633eba98a3..44a2ef49f51 100644
--- a/modules/adbutlerBidAdapter.js
+++ b/modules/adbutlerBidAdapter.js
@@ -74,6 +74,7 @@ export const spec = {
     var width;
     var height;
 
+    serverResponse = serverResponse.body;
     if (serverResponse && serverResponse.status === 'SUCCESS' && bidObj) {
       CPM = serverResponse.cpm;
       minCPM = utils.getBidIdParameter('minCPM', bidObj.params);
diff --git a/modules/appnexusAstBidAdapter.js b/modules/appnexusAstBidAdapter.js
index c4e2686db15..9a2cea8a229 100644
--- a/modules/appnexusAstBidAdapter.js
+++ b/modules/appnexusAstBidAdapter.js
@@ -87,6 +87,7 @@ export const spec = {
    * @return {Bid[]} An array of bids which were nested inside the server.
    */
   interpretResponse: function(serverResponse, {bidderRequest}) {
+    serverResponse = serverResponse.body;
     const bids = [];
     if (!serverResponse || serverResponse.error) {
       let errorMessage = `in response for ${bidderRequest.bidderCode} adapter`;
diff --git a/modules/beachfrontBidAdapter.js b/modules/beachfrontBidAdapter.js
index 2729dcdd324..d4fcc3e3578 100644
--- a/modules/beachfrontBidAdapter.js
+++ b/modules/beachfrontBidAdapter.js
@@ -23,6 +23,7 @@ export const spec = {
   },
 
   interpretResponse(response, { bidRequest }) {
+    response = response.body;
     if (!response || !response.url || !response.bidPrice) {
       utils.logWarn(`No valid bids from ${spec.code} bidder`);
       return [];
diff --git a/modules/jcmBidAdapter.js b/modules/jcmBidAdapter.js
index 3e0e46b8b77..4c9792a00f2 100644
--- a/modules/jcmBidAdapter.js
+++ b/modules/jcmBidAdapter.js
@@ -44,6 +44,7 @@ export const spec = {
 
   interpretResponse: function(serverResponse) {
     const bidResponses = [];
+    serverResponse = serverResponse.body;
     // loop through serverResponses
     if (serverResponse) {
       if (serverResponse.bids) {
diff --git a/modules/platformioBidAdapter.js b/modules/platformioBidAdapter.js
index c33551ed396..2fb23ab92b3 100644
--- a/modules/platformioBidAdapter.js
+++ b/modules/platformioBidAdapter.js
@@ -24,7 +24,7 @@ export const spec = {
     };
   },
   interpretResponse: (response, request) => (
-    bidResponseAvailable(request, response)
+    bidResponseAvailable(request, response.body)
   ),
 };
 function bidResponseAvailable(bidRequest, bidResponse) {
diff --git a/modules/pulsepointLiteBidAdapter.js b/modules/pulsepointLiteBidAdapter.js
index 00b5c014e98..99a83871dd8 100644
--- a/modules/pulsepointLiteBidAdapter.js
+++ b/modules/pulsepointLiteBidAdapter.js
@@ -69,6 +69,7 @@ export const spec = {
 function bidResponseAvailable(bidRequest, bidResponse) {
   const idToImpMap = {};
   const idToBidMap = {};
+  bidResponse = bidResponse.body
   // extract the request bids and the response bids, keyed by impr-id
   const ortbRequest = parse(bidRequest.data);
   ortbRequest.imp.forEach(imp => {
diff --git a/modules/rubiconBidAdapter.js b/modules/rubiconBidAdapter.js
index 69981ba2b56..866e02bc258 100644
--- a/modules/rubiconBidAdapter.js
+++ b/modules/rubiconBidAdapter.js
@@ -230,6 +230,7 @@ export const spec = {
    * @return {Bid[]} An array of bids which
    */
   interpretResponse: function(responseObj, {bidRequest}) {
+    responseObj = responseObj.body
     let ads = responseObj.ads;
 
     // check overall response
diff --git a/src/adapters/bidderFactory.js b/src/adapters/bidderFactory.js
index 12b7b931a9b..87dfd372b9c 100644
--- a/src/adapters/bidderFactory.js
+++ b/src/adapters/bidderFactory.js
@@ -44,7 +44,7 @@ import { logWarn, logError, parseQueryStringParameters, delayExecution } from 's
  * @property {function(BidRequest[], bidderRequest): ServerRequest|ServerRequest[]} buildRequests Build the request to the Server
  *   which requests Bids for the given array of Requests. Each BidRequest in the argument array is guaranteed to have
  *   passed the isBidRequestValid() test.
- * @property {function(*, BidRequest): Bid[]} interpretResponse Given a successful response from the Server,
+ * @property {function(ServerResponse, BidRequest): Bid[]} interpretResponse Given a successful response from the Server,
  *   interpret it and return the Bid objects. This function will be run inside a try/catch.
  *   If it throws any errors, your bids will be discarded.
  * @property {function(SyncOptions, Array): UserSync[]} [getUserSyncs] Given an array of all the responses
@@ -72,6 +72,15 @@ import { logWarn, logError, parseQueryStringParameters, delayExecution } from 's
  *   JSON-serialized into the Request body.
  */
 
+/**
+ * @typedef {object} ServerResponse
+ *
+ * @property {*} body The response body. If this is legal JSON, then it will be parsed. Otherwise it'll be a
+ *   string with the body's content.
+ * @property {{get: function(string): string} headers The response headers.
+ *   Call this like `ServerResponse.headers.get("Content-Type")`
+ */
+
 /**
  * @typedef {object} Bid
  *
@@ -263,10 +272,16 @@ export function newBidder(spec) {
         // If the server responds successfully, use the adapter code to unpack the Bids from it.
         // If the adapter code fails, no bids should be added. After all the bids have been added, make
         // sure to call the `onResponse` function so that we're one step closer to calling fillNoBids().
-        function onSuccess(response) {
+        function onSuccess(response, responseObj) {
           try {
             response = JSON.parse(response);
           } catch (e) { /* response might not be JSON... that's ok. */ }
+
+          // Make response headers available for #1742. These are lazy-loaded because most adapters won't need them.
+          response = {
+            body: response,
+            headers: headerParser(responseObj)
+          };
           responses.push(response);
 
           let bids;
@@ -296,6 +311,12 @@ export function newBidder(spec) {
               logWarn(`Bidder ${spec.code} made bid for unknown request ID: ${bid.requestId}. Ignoring.`);
             }
           }
+
+          function headerParser(xmlHttpResponse) {
+            return {
+              get: responseObj.getResponseHeader.bind(responseObj)
+            };
+          }
         }
 
         // If the server responds with an error, there's not much we can do. Log it, and make sure to
diff --git a/test/spec/modules/adbutlerBidAdapter_spec.js b/test/spec/modules/adbutlerBidAdapter_spec.js
index 352358be8d0..de40f72073b 100644
--- a/test/spec/modules/adbutlerBidAdapter_spec.js
+++ b/test/spec/modules/adbutlerBidAdapter_spec.js
@@ -121,17 +121,19 @@ describe('AdButler adapter', () => {
     describe('bid responses', () => {
       it('should return complete bid response', () => {
         let serverResponse = {
-            status: 'SUCCESS',
-            account_id: 167283,
-            zone_id: 210093,
-            cpm: 1.5,
-            width: 300,
-            height: 250,
-            place: 0,
-            ad_code: '<img src="http://image.source.com/img" alt="" title="" border="0" width="300" height="250">',
-            tracking_pixels: [
-              'http://tracking.pixel.com/params=info'
-            ]
+            body: {
+              status: 'SUCCESS',
+              account_id: 167283,
+              zone_id: 210093,
+              cpm: 1.5,
+              width: 300,
+              height: 250,
+              place: 0,
+              ad_code: '<img src="http://image.source.com/img" alt="" title="" border="0" width="300" height="250">',
+              tracking_pixels: [
+                'http://tracking.pixel.com/params=info'
+              ]
+            }
           },
           bids = spec.interpretResponse(serverResponse, {'bidRequest': bidRequests[0]});
 
diff --git a/test/spec/modules/appnexusAstBidAdapter_spec.js b/test/spec/modules/appnexusAstBidAdapter_spec.js
index d07ee6df543..d76cc08810f 100644
--- a/test/spec/modules/appnexusAstBidAdapter_spec.js
+++ b/test/spec/modules/appnexusAstBidAdapter_spec.js
@@ -306,7 +306,7 @@ describe('AppNexusAdapter', () => {
       ];
       let bidderRequest;
 
-      let result = spec.interpretResponse(response, {bidderRequest});
+      let result = spec.interpretResponse({ body: response }, {bidderRequest});
       expect(Object.keys(result[0])).to.deep.equal(Object.keys(expectedResponse[0]));
     });
 
@@ -322,7 +322,7 @@ describe('AppNexusAdapter', () => {
       };
       let bidderRequest;
 
-      let result = spec.interpretResponse(response, {bidderRequest});
+      let result = spec.interpretResponse({ body: response }, {bidderRequest});
       expect(result.length).to.equal(0);
     });
 
@@ -343,7 +343,7 @@ describe('AppNexusAdapter', () => {
       };
       let bidderRequest;
 
-      let result = spec.interpretResponse(response, {bidderRequest});
+      let result = spec.interpretResponse({ body: response }, {bidderRequest});
       expect(result[0]).to.have.property('vastUrl');
       expect(result[0]).to.have.property('descriptionUrl');
       expect(result[0]).to.have.property('mediaType', 'video');
@@ -376,7 +376,7 @@ describe('AppNexusAdapter', () => {
       };
       let bidderRequest;
 
-      let result = spec.interpretResponse(response1, {bidderRequest});
+      let result = spec.interpretResponse({ body: response1 }, {bidderRequest});
       expect(result[0].native.title).to.equal('Native Creative');
       expect(result[0].native.body).to.equal('Cool description great stuff');
       expect(result[0].native.cta).to.equal('Do it');
diff --git a/test/spec/modules/beachfrontBidAdapter_spec.js b/test/spec/modules/beachfrontBidAdapter_spec.js
index 43df639613f..92e16573972 100644
--- a/test/spec/modules/beachfrontBidAdapter_spec.js
+++ b/test/spec/modules/beachfrontBidAdapter_spec.js
@@ -104,7 +104,7 @@ describe('BeachfrontAdapter', () => {
 
   describe('spec.interpretResponse', () => {
     it('should return no bids if the response is not valid', () => {
-      const bidResponse = spec.interpretResponse(null, { bidRequest });
+      const bidResponse = spec.interpretResponse({ body: null }, { bidRequest });
       expect(bidResponse.length).to.equal(0);
     });
 
@@ -112,7 +112,7 @@ describe('BeachfrontAdapter', () => {
       const serverResponse = {
         bidPrice: 5.00
       };
-      const bidResponse = spec.interpretResponse(serverResponse, { bidRequest });
+      const bidResponse = spec.interpretResponse({ body: serverResponse }, { bidRequest });
       expect(bidResponse.length).to.equal(0);
     });
 
@@ -120,7 +120,7 @@ describe('BeachfrontAdapter', () => {
       const serverResponse = {
         url: 'http://reachms.bfmio.com/getmu?aid=bid:19c4a196-fb21-4c81-9a1a-ecc5437a39da'
       };
-      const bidResponse = spec.interpretResponse(serverResponse, { bidRequest });
+      const bidResponse = spec.interpretResponse({ body: serverResponse }, { bidRequest });
       expect(bidResponse.length).to.equal(0);
     });
 
@@ -130,7 +130,7 @@ describe('BeachfrontAdapter', () => {
         url: 'http://reachms.bfmio.com/getmu?aid=bid:19c4a196-fb21-4c81-9a1a-ecc5437a39da',
         cmpId: '123abc'
       };
-      const bidResponse = spec.interpretResponse(serverResponse, { bidRequest });
+      const bidResponse = spec.interpretResponse({ body: serverResponse }, { bidRequest });
       expect(bidResponse).to.deep.equal({
         requestId: bidRequest.bidId,
         bidderCode: spec.code,
diff --git a/test/spec/modules/jcmBidAdapter_spec.js b/test/spec/modules/jcmBidAdapter_spec.js
index a063d6b9805..95356a9658e 100644
--- a/test/spec/modules/jcmBidAdapter_spec.js
+++ b/test/spec/modules/jcmBidAdapter_spec.js
@@ -94,7 +94,7 @@ describe('jcmAdapter', () => {
         }
       ];
 
-      let result = spec.interpretResponse(serverResponse);
+      let result = spec.interpretResponse({ body: serverResponse });
       expect(Object.keys(result[0]).length).to.equal(Object.keys(expectedResponse[0]).length);
       expect(Object.keys(result[0]).requestId).to.equal(Object.keys(expectedResponse[0]).requestId);
       expect(Object.keys(result[0]).bidderCode).to.equal(Object.keys(expectedResponse[0]).bidderCode);
@@ -112,7 +112,7 @@ describe('jcmAdapter', () => {
     it('handles nobid responses', () => {
       let serverResponse = {'bids': []};
 
-      let result = spec.interpretResponse(serverResponse);
+      let result = spec.interpretResponse({ body: serverResponse });
       expect(result.length).to.equal(0);
     });
   });
diff --git a/test/spec/modules/platformioBidAdapter_spec.js b/test/spec/modules/platformioBidAdapter_spec.js
index 1b07b4049d4..86bf52cac72 100644
--- a/test/spec/modules/platformioBidAdapter_spec.js
+++ b/test/spec/modules/platformioBidAdapter_spec.js
@@ -63,7 +63,7 @@ describe('Platformio Adapter Tests', () => {
         }]
       }]
     };
-    const bids = spec.interpretResponse(ortbResponse, request);
+    const bids = spec.interpretResponse({ body: ortbResponse }, request);
     expect(bids).to.have.lengthOf(1);
     // verify first bid
     const bid = bids[0];
@@ -78,7 +78,7 @@ describe('Platformio Adapter Tests', () => {
 
   it('Verify full passback', () => {
     const request = spec.buildRequests(slotConfigs);
-    const bids = spec.interpretResponse(null, request)
+    const bids = spec.interpretResponse({ body: null }, request)
     expect(bids).to.have.lengthOf(0);
   });
 
diff --git a/test/spec/modules/pulsepointLiteBidAdapter_spec.js b/test/spec/modules/pulsepointLiteBidAdapter_spec.js
index 96f5c7a8d1f..9731164cd50 100644
--- a/test/spec/modules/pulsepointLiteBidAdapter_spec.js
+++ b/test/spec/modules/pulsepointLiteBidAdapter_spec.js
@@ -89,7 +89,7 @@ describe('PulsePoint Lite Adapter Tests', () => {
         }]
       }]
     };
-    const bids = spec.interpretResponse(ortbResponse, request);
+    const bids = spec.interpretResponse({ body: ortbResponse }, request);
     expect(bids).to.have.lengthOf(1);
     // verify first bid
     const bid = bids[0];
@@ -104,7 +104,7 @@ describe('PulsePoint Lite Adapter Tests', () => {
 
   it('Verify full passback', () => {
     const request = spec.buildRequests(slotConfigs);
-    const bids = spec.interpretResponse(null, request)
+    const bids = spec.interpretResponse({ body: null }, request)
     expect(bids).to.have.lengthOf(0);
   });
 
@@ -171,7 +171,7 @@ describe('PulsePoint Lite Adapter Tests', () => {
         }]
       }]
     };
-    const bids = spec.interpretResponse(ortbResponse, request);
+    const bids = spec.interpretResponse({ body: ortbResponse }, request);
     // verify bid
     const bid = bids[0];
     expect(bid.cpm).to.equal(1.25);
diff --git a/test/spec/modules/rubiconBidAdapter_spec.js b/test/spec/modules/rubiconBidAdapter_spec.js
index 620fc56e516..6c08c66f485 100644
--- a/test/spec/modules/rubiconBidAdapter_spec.js
+++ b/test/spec/modules/rubiconBidAdapter_spec.js
@@ -604,7 +604,7 @@ describe('the rubicon adapter', () => {
             ]
           };
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
@@ -654,7 +654,7 @@ describe('the rubicon adapter', () => {
             }]
           };
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
@@ -677,7 +677,7 @@ describe('the rubicon adapter', () => {
             'ads': []
           };
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
@@ -701,7 +701,7 @@ describe('the rubicon adapter', () => {
             }]
           };
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
@@ -711,7 +711,7 @@ describe('the rubicon adapter', () => {
         it('should handle an error because of malformed json response', () => {
           let response = '{test{';
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
@@ -752,7 +752,7 @@ describe('the rubicon adapter', () => {
             'account_id': 7780
           };
 
-          let bids = spec.interpretResponse(response, {
+          let bids = spec.interpretResponse({ body: response }, {
             bidRequest: bidderRequest.bids[0]
           });
 
diff --git a/test/spec/unit/core/bidderFactory_spec.js b/test/spec/unit/core/bidderFactory_spec.js
index e91ddcf39a4..3260b66da28 100644
--- a/test/spec/unit/core/bidderFactory_spec.js
+++ b/test/spec/unit/core/bidderFactory_spec.js
@@ -265,7 +265,9 @@ describe('bidders created by newBidder', () => {
 
     beforeEach(() => {
       ajaxStub = sinon.stub(ajax, 'ajax', function(url, callbacks) {
-        callbacks.success('response body');
+        const fakeResponse = sinon.stub();
+        fakeResponse.returns('headerContent');
+        callbacks.success('response body', { getResponseHeader: fakeResponse });
       });
       userSyncStub = sinon.stub(userSync, 'registerSync')
     });
@@ -275,7 +277,7 @@ describe('bidders created by newBidder', () => {
       userSyncStub.restore();
     });
 
-    it('should call spec.interpretResponse() with the response body content', () => {
+    it('should call spec.interpretResponse() with the response content', () => {
       const bidder = newBidder(spec);
 
       spec.isBidRequestValid.returns(true);
@@ -289,7 +291,9 @@ describe('bidders created by newBidder', () => {
       bidder.callBids(MOCK_BIDS_REQUEST);
 
       expect(spec.interpretResponse.calledOnce).to.equal(true);
-      expect(spec.interpretResponse.firstCall.args[0]).to.equal('response body');
+      const response = spec.interpretResponse.firstCall.args[0]
+      expect(response.body).to.equal('response body')
+      expect(response.headers.get('some-header')).to.equal('headerContent');
       expect(spec.interpretResponse.firstCall.args[1]).to.deep.equal({
         method: 'POST',
         url: 'test.url.com',
@@ -364,7 +368,10 @@ describe('bidders created by newBidder', () => {
       bidder.callBids(MOCK_BIDS_REQUEST);
 
       expect(spec.getUserSyncs.calledOnce).to.equal(true);
-      expect(spec.getUserSyncs.firstCall.args[1]).to.deep.equal(['response body']);
+      expect(spec.getUserSyncs.firstCall.args[1].length).to.equal(1);
+      expect(spec.getUserSyncs.firstCall.args[1][0].body).to.equal('response body');
+      expect(spec.getUserSyncs.firstCall.args[1][0].headers).to.have.property('get');
+      expect(spec.getUserSyncs.firstCall.args[1][0].headers.get).to.be.a('function');
     });
 
     it('should register usersync pixels', () => {