diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/grouped_security_reports_app.vue b/ee/app/assets/javascripts/vue_shared/security_reports/grouped_security_reports_app.vue
index 5ed3a99b3c6d0d2a479b9de261841869fd68fb80..ab98b376d4d293c5f43ea878b535542207a07432 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/grouped_security_reports_app.vue
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/grouped_security_reports_app.vue
@@ -168,6 +168,11 @@ export default {
     securityTab() {
       return `${this.pipelinePath}/security`;
     },
+    shouldRenderSastContainer() {
+      const { head, diffEndpoint } = this.sastContainer.paths;
+
+      return head || diffEndpoint;
+    },
   },
 
   created() {
@@ -196,7 +201,17 @@ export default {
       this.fetchSastReports();
     }
 
-    if (this.sastContainerHeadPath) {
+    const sastContainerDiffEndpoint =
+      gl && gl.mrWidgetData && gl.mrWidgetData.container_scanning_comparison_path;
+
+    if (
+      gon.features &&
+      gon.features.containerScanningMergeRequestReportApi &&
+      sastContainerDiffEndpoint
+    ) {
+      this.setSastContainerDiffEndpoint(sastContainerDiffEndpoint);
+      this.fetchSastContainerDiff();
+    } else if (this.sastContainerHeadPath) {
       this.setSastContainerHeadPath(this.sastContainerHeadPath);
 
       if (this.sastContainerBasePath) {
@@ -257,6 +272,8 @@ export default {
       'deleteDismissalComment',
       'showDismissalDeleteButtons',
       'hideDismissalDeleteButtons',
+      'fetchSastContainerDiff',
+      'setSastContainerDiffEndpoint',
     ]),
     ...mapActions('sast', {
       setSastHeadPath: 'setHeadPath',
@@ -322,7 +339,7 @@ export default {
         />
       </template>
 
-      <template v-if="sastContainerHeadPath">
+      <template v-if="shouldRenderSastContainer">
         <summary-row
           :summary="groupedSastContainerText"
           :status-icon="sastContainerStatusIcon"
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/actions.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/actions.js
index 648d534659fe24f839f8a0587396921b1fda5c95..4411b16d55e1e2f9c5a04abb15c8fe3c94eebb41 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/actions.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/actions.js
@@ -4,6 +4,8 @@ import { s__ } from '~/locale';
 import { visitUrl } from '~/lib/utils/url_utility';
 import * as types from './mutation_types';
 import downloadPatchHelper from './utils/download_patch_helper';
+import Poll from '~/lib/utils/poll';
+import httpStatusCodes from '~/lib/utils/http_status';
 
 /**
  * A lot of this file has duplicate actions to
@@ -54,6 +56,9 @@ export const setSastContainerHeadPath = ({ commit }, path) =>
 export const setSastContainerBasePath = ({ commit }, path) =>
   commit(types.SET_SAST_CONTAINER_BASE_PATH, path);
 
+export const setSastContainerDiffEndpoint = ({ commit }, path) =>
+  commit(types.SET_SAST_CONTAINER_DIFF_ENDPOINT, path);
+
 export const requestSastContainerReports = ({ commit }) =>
   commit(types.REQUEST_SAST_CONTAINER_REPORTS);
 
@@ -63,6 +68,52 @@ export const receiveSastContainerReports = ({ commit }, response) =>
 export const receiveSastContainerError = ({ commit }, error) =>
   commit(types.RECEIVE_SAST_CONTAINER_ERROR, error);
 
+export const receiveSastContainerDiffSuccess = ({ commit }, response) =>
+  commit(types.RECEIVE_SAST_CONTAINER_DIFF_SUCCESS, response);
+
+export const fetchSastContainerDiff = ({ state, dispatch }) => {
+  dispatch('requestSastContainerReports');
+
+  const pollPromise = new Promise((resolve, reject) => {
+    const eTagPoll = new Poll({
+      resource: {
+        getReports(endpoint) {
+          return axios.get(endpoint);
+        },
+      },
+      data: state.sastContainer.paths.diffEndpoint,
+      method: 'getReports',
+      successCallback: response => {
+        if (response.status === httpStatusCodes.OK) {
+          resolve(response);
+          eTagPoll.stop();
+        }
+      },
+      errorCallback: reject,
+    });
+
+    eTagPoll.makeRequest();
+  });
+
+  return Promise.all([
+    pollPromise,
+    axios.get(state.vulnerabilityFeedbackPath, {
+      params: {
+        category: 'container_scanning',
+      },
+    }),
+  ])
+    .then(values => {
+      dispatch('receiveSastContainerDiffSuccess', {
+        diff: values[0].data,
+        enrichData: values[1].data,
+      });
+    })
+    .catch(() => {
+      dispatch('receiveSastContainerError');
+    });
+};
+
 export const fetchSastContainerReports = ({ state, dispatch }) => {
   const { base, head } = state.sastContainer.paths;
 
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/mutation_types.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/mutation_types.js
index 36e8a5eae1d7644edc788a911001971d92133135..4235fd54d9c2caa4a79154d86e9b88120efe98c0 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/mutation_types.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/mutation_types.js
@@ -16,9 +16,11 @@ export const SET_CAN_CREATE_FEEDBACK_PERMISSION = 'SET_CAN_CREATE_FEEDBACK_PERMI
 // SAST CONTAINER
 export const SET_SAST_CONTAINER_HEAD_PATH = 'SET_SAST_CONTAINER_HEAD_PATH';
 export const SET_SAST_CONTAINER_BASE_PATH = 'SET_SAST_CONTAINER_BASE_PATH';
+export const SET_SAST_CONTAINER_DIFF_ENDPOINT = 'SET_SAST_CONTAINER_DIFF_ENDPOINT';
 export const REQUEST_SAST_CONTAINER_REPORTS = 'REQUEST_SAST_CONTAINER_REPORTS';
 export const RECEIVE_SAST_CONTAINER_REPORTS = 'RECEIVE_SAST_CONTAINER_REPORTS';
 export const RECEIVE_SAST_CONTAINER_ERROR = 'RECEIVE_SAST_CONTAINER_ERROR';
+export const RECEIVE_SAST_CONTAINER_DIFF_SUCCESS = 'RECEIVE_SAST_CONTAINER_DIFF_SUCCESS';
 
 // DAST
 export const SET_DAST_HEAD_PATH = 'SET_DAST_HEAD_PATH';
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/mutations.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/mutations.js
index b47472d85d8b7e9d30d4bb46603f39510058c0e3..8c0e76a482c885ba3436b6728a38de0c5d1cbbfd 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/mutations.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/mutations.js
@@ -5,6 +5,7 @@ import {
   parseDastIssues,
   getUnapprovedVulnerabilities,
   findIssueIndex,
+  enrichVulnerabilityWithFeedback,
 } from './utils';
 import filterByKey from './utils/filter_by_key';
 import { parseSastContainer } from './utils/container_scanning';
@@ -64,6 +65,10 @@ export default {
     Vue.set(state.sastContainer.paths, 'base', path);
   },
 
+  [types.SET_SAST_CONTAINER_DIFF_ENDPOINT](state, path) {
+    Vue.set(state.sastContainer.paths, 'diffEndpoint', path);
+  },
+
   [types.REQUEST_SAST_CONTAINER_REPORTS](state) {
     Vue.set(state.sastContainer, 'isLoading', true);
   },
@@ -100,6 +105,21 @@ export default {
     }
   },
 
+  [types.RECEIVE_SAST_CONTAINER_DIFF_SUCCESS](state, { diff, enrichData }) {
+    const fillInTheGaps = vulnerability => ({
+      ...enrichVulnerabilityWithFeedback(vulnerability, enrichData),
+      category: vulnerability.report_type,
+      title: vulnerability.message || vulnerability.name,
+    });
+
+    const added = diff.added ? diff.added.map(fillInTheGaps) : [];
+    const fixed = diff.fixed ? diff.fixed.map(fillInTheGaps) : [];
+
+    Vue.set(state.sastContainer, 'isLoading', false);
+    Vue.set(state.sastContainer, 'newIssues', added);
+    Vue.set(state.sastContainer, 'resolvedIssues', fixed);
+  },
+
   [types.RECEIVE_SAST_CONTAINER_ERROR](state) {
     Vue.set(state.sastContainer, 'isLoading', false);
     Vue.set(state.sastContainer, 'hasError', true);
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/state.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/state.js
index d1bb3d12cb1b95bf8066099e051d0058306658c7..5c8777a6309739946169d1e8f5a6b389cea403a8 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/state.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/state.js
@@ -20,6 +20,7 @@ export default () => ({
     paths: {
       head: null,
       base: null,
+      diffEndpoint: null,
     },
 
     isLoading: false,
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/utils.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/utils.js
index ed00b8a771a5667bd532592ce52becc685692091..4db9891135b196d105d1d5c1aa9d04c63440cbb1 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/utils.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/utils.js
@@ -43,7 +43,7 @@ export const findMatchingRemediations = (remediations, vulnerability) => {
  * @param {Object} vulnerability
  * @param {Array} feedback
  */
-export const enrichVulnerabilityWithfeedback = (vulnerability, feedback = []) =>
+export const enrichVulnerabilityWithFeedback = (vulnerability, feedback = []) =>
   feedback
     .filter(fb => fb.project_fingerprint === vulnerability.project_fingerprint)
     .reduce((vuln, fb) => {
@@ -160,7 +160,7 @@ export const parseSastIssues = (report = [], feedback = [], path = '') =>
       ...parsed,
       path: parsed.location.file,
       urlPath: fileUrl(parsed.location, path),
-      ...enrichVulnerabilityWithfeedback(parsed, feedback),
+      ...enrichVulnerabilityWithFeedback(parsed, feedback),
     };
   });
 
@@ -192,7 +192,7 @@ export const parseDependencyScanningIssues = (report = [], feedback = [], path =
       ...parsed,
       path: parsed.location.file,
       urlPath: fileUrl(parsed.location, path),
-      ...enrichVulnerabilityWithfeedback(parsed, feedback),
+      ...enrichVulnerabilityWithFeedback(parsed, feedback),
     };
   });
 };
@@ -253,7 +253,7 @@ export const parseDastIssues = (sites = [], feedback = []) =>
 
         return {
           ...parsed,
-          ...enrichVulnerabilityWithfeedback(parsed, feedback),
+          ...enrichVulnerabilityWithFeedback(parsed, feedback),
         };
       }),
     ],
@@ -274,7 +274,7 @@ export const groupedTextBuilder = ({
 }) => {
   let baseString = '';
 
-  if (!paths.base) {
+  if (!paths.base && !paths.diffEndpoint) {
     if (added && !dismissed) {
       // added
       baseString = n__(
@@ -300,7 +300,7 @@ export const groupedTextBuilder = ({
         'ciReport|%{reportType} %{status} detected no vulnerabilities for the source branch only',
       );
     }
-  } else if (paths.head) {
+  } else if (paths.head || paths.diffEndpoint) {
     if (added && !fixed && !dismissed) {
       // added
       baseString = n__(
diff --git a/ee/app/assets/javascripts/vue_shared/security_reports/store/utils/container_scanning.js b/ee/app/assets/javascripts/vue_shared/security_reports/store/utils/container_scanning.js
index 759492c4bf5c341d0b5faa8e11188145b8ab4e05..6ab32ba8f59b31e107a1186e73ac18fbdf6930dd 100644
--- a/ee/app/assets/javascripts/vue_shared/security_reports/store/utils/container_scanning.js
+++ b/ee/app/assets/javascripts/vue_shared/security_reports/store/utils/container_scanning.js
@@ -2,7 +2,7 @@ import { SEVERITY_LEVELS } from 'ee/security_dashboard/store/constants';
 import { s__, sprintf } from '~/locale';
 import sha1 from 'sha1';
 import _ from 'underscore';
-import { enrichVulnerabilityWithfeedback } from '../utils';
+import { enrichVulnerabilityWithFeedback } from '../utils';
 
 /*
   Container scanning mapping utils
@@ -166,6 +166,6 @@ export const parseSastContainer = (issues = [], feedback = [], image) =>
     return {
       ...parsed,
       ...frontendOnly,
-      ...enrichVulnerabilityWithfeedback(frontendOnly, feedback),
+      ...enrichVulnerabilityWithFeedback(frontendOnly, feedback),
     };
   });
diff --git a/ee/spec/frontend/vue_shared/security_reports/store/mutations_spec.js b/ee/spec/frontend/vue_shared/security_reports/store/mutations_spec.js
index 205eeeff22054f9f9eec41456f0cb88defc7ddce..e78a7dcfba8cafbd3f4decd742529bac66a05894 100644
--- a/ee/spec/frontend/vue_shared/security_reports/store/mutations_spec.js
+++ b/ee/spec/frontend/vue_shared/security_reports/store/mutations_spec.js
@@ -784,4 +784,60 @@ describe('security reports mutations', () => {
       expect(stateCopy.dast.resolvedIssues[0]).toEqual(updatedIssue);
     });
   });
+
+  describe('SET_SAST_CONTAINER_DIFF_ENDPOINT', () => {
+    const endpoint = 'sast_container_diff_endpoint.json';
+
+    beforeEach(() => {
+      mutations[types.SET_SAST_CONTAINER_DIFF_ENDPOINT](stateCopy, endpoint);
+    });
+
+    it('should set the correct endpoint', () => {
+      expect(stateCopy.sastContainer.paths.diffEndpoint).toEqual(endpoint);
+    });
+  });
+
+  describe('RECEIVE_SAST_CONTAINER_DIFF_SUCCESS', () => {
+    const reports = {
+      diff: {
+        added: [
+          { name: 'added vuln 1', report_type: 'container_scanning' },
+          { name: 'added vuln 2', report_type: 'container_scanning' },
+        ],
+        fixed: [{ name: 'fixed vuln 1', report_type: 'container_scanning' }],
+      },
+    };
+
+    beforeEach(() => {
+      mutations[types.RECEIVE_SAST_CONTAINER_DIFF_SUCCESS](stateCopy, reports);
+    });
+
+    it('should set isLoading to false', () => {
+      expect(stateCopy.sastContainer.isLoading).toBe(false);
+    });
+
+    it('should parse and set the added vulnerabilities', () => {
+      reports.diff.added.forEach((vuln, i) => {
+        expect(stateCopy.sastContainer.newIssues[i]).toEqual(
+          expect.objectContaining({
+            name: vuln.name,
+            title: vuln.name,
+            category: vuln.report_type,
+          }),
+        );
+      });
+    });
+
+    it('should parse and set the fixed vulnerabilities', () => {
+      reports.diff.fixed.forEach((vuln, i) => {
+        expect(stateCopy.sastContainer.resolvedIssues[i]).toEqual(
+          expect.objectContaining({
+            name: vuln.name,
+            title: vuln.name,
+            category: vuln.report_type,
+          }),
+        );
+      });
+    });
+  });
 });
diff --git a/ee/spec/javascripts/vue_shared/security_reports/grouped_security_reports_app_spec.js b/ee/spec/javascripts/vue_shared/security_reports/grouped_security_reports_app_spec.js
index 49ba54e03cfc7e8059ee5e6f03ead0020840329b..f9fdfd9228e6765a4b29f1492909f04b35093901 100644
--- a/ee/spec/javascripts/vue_shared/security_reports/grouped_security_reports_app_spec.js
+++ b/ee/spec/javascripts/vue_shared/security_reports/grouped_security_reports_app_spec.js
@@ -271,4 +271,52 @@ describe('Grouped security reports app', () => {
       expect(vm.securityTab).toEqual(`${pipelinePath}/security`);
     });
   });
+
+  describe('with the reports API enabled', () => {
+    const sastContainerEndpoint = 'sast_container.json';
+
+    beforeEach(done => {
+      gon.features = gon.features || {};
+      gon.features.containerScanningMergeRequestReportApi = true;
+
+      gl.mrWidgetData = gl.mrWidgetData || {};
+      gl.mrWidgetData.container_scanning_comparison_path = sastContainerEndpoint;
+
+      mock.onGet(sastContainerEndpoint).reply(200, {
+        added: [dockerReport.vulnerabilities[0], dockerReport.vulnerabilities[1]],
+        fixed: [dockerReport.vulnerabilities[2]],
+      });
+
+      mock.onGet('vulnerability_feedback_path.json').reply(200, []);
+
+      vm = mountComponent(Component, {
+        headBlobPath: 'path',
+        baseBlobPath: 'path',
+        sastHelpPath: 'path',
+        sastContainerHelpPath: 'path',
+        dastHelpPath: 'path',
+        dependencyScanningHelpPath: 'path',
+        vulnerabilityFeedbackPath: 'vulnerability_feedback_path.json',
+        vulnerabilityFeedbackHelpPath: 'path',
+        pipelineId: 123,
+        canCreateIssue: true,
+        canCreateMergeRequest: true,
+        canDismissVulnerability: true,
+      });
+
+      waitForMutation(vm.$store, types.RECEIVE_SAST_CONTAINER_DIFF_SUCCESS)
+        .then(done)
+        .catch();
+    });
+
+    it('should set setSastContainerDiffEndpoint', () => {
+      expect(vm.sastContainer.paths.diffEndpoint).toEqual(sastContainerEndpoint);
+    });
+
+    it('should call `fetchSastContainerDiff`', () => {
+      expect(vm.$el.textContent).toContain(
+        'Container scanning detected 2 new, and 1 fixed vulnerabilities',
+      );
+    });
+  });
 });
diff --git a/ee/spec/javascripts/vue_shared/security_reports/store/actions_spec.js b/ee/spec/javascripts/vue_shared/security_reports/store/actions_spec.js
index 9441d36da9fbd4e63c7b9f2a857ce1b4358c2134..65da6446566e927bbabf08813344ef295e2765e3 100644
--- a/ee/spec/javascripts/vue_shared/security_reports/store/actions_spec.js
+++ b/ee/spec/javascripts/vue_shared/security_reports/store/actions_spec.js
@@ -55,6 +55,9 @@ import actions, {
   requestDeleteDismissalComment,
   showDismissalDeleteButtons,
   hideDismissalDeleteButtons,
+  setSastContainerDiffEndpoint,
+  receiveSastContainerDiffSuccess,
+  fetchSastContainerDiff,
 } from 'ee/vue_shared/security_reports/store/actions';
 import * as types from 'ee/vue_shared/security_reports/store/mutation_types';
 import state from 'ee/vue_shared/security_reports/store/state';
@@ -1585,4 +1588,144 @@ describe('security reports actions', () => {
       );
     });
   });
+
+  describe('setSastContainerDiffEndpoint', () => {
+    it('should pass down the endpoint to the mutation', done => {
+      const payload = '/sast_container_endpoint.json';
+
+      testAction(
+        setSastContainerDiffEndpoint,
+        payload,
+        mockedState,
+        [
+          {
+            type: types.SET_SAST_CONTAINER_DIFF_ENDPOINT,
+            payload,
+          },
+        ],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('receiveSastContainerDiffSuccess', () => {
+    it('should pass down the response to the mutation', done => {
+      const payload = { data: 'Effort yields its own rewards.' };
+
+      testAction(
+        receiveSastContainerDiffSuccess,
+        payload,
+        mockedState,
+        [
+          {
+            type: types.RECEIVE_SAST_CONTAINER_DIFF_SUCCESS,
+            payload,
+          },
+        ],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('fetchSastContainerDiff', () => {
+    const diff = { vulnerabilities: [] };
+
+    beforeEach(() => {
+      mockedState.vulnerabilityFeedbackPath = 'vulnerabilities_feedback';
+      mockedState.sastContainer.paths.diffEndpoint = 'sast_container_diff.json';
+    });
+
+    describe('on success', () => {
+      it('should dispatch `receiveSastContainerDiffSuccess`', done => {
+        mock.onGet('sast_container_diff.json').reply(200, diff);
+        mock
+          .onGet('vulnerabilities_feedback', {
+            params: {
+              category: 'container_scanning',
+            },
+          })
+          .reply(200, containerScanningFeedbacks);
+
+        testAction(
+          fetchSastContainerDiff,
+          null,
+          mockedState,
+          [],
+          [
+            {
+              type: 'requestSastContainerReports',
+            },
+            {
+              type: 'receiveSastContainerDiffSuccess',
+              payload: {
+                diff,
+                enrichData: containerScanningFeedbacks,
+              },
+            },
+          ],
+          done,
+        );
+      });
+    });
+
+    describe('when vulnerabilities path errors', () => {
+      it('should dispatch `receiveSastContainerError`', done => {
+        mock.onGet('sast_container_diff.json').reply(500);
+        mock
+          .onGet('vulnerabilities_feedback', {
+            params: {
+              category: 'container_scanning',
+            },
+          })
+          .reply(200, containerScanningFeedbacks);
+
+        testAction(
+          fetchSastContainerDiff,
+          null,
+          mockedState,
+          [],
+          [
+            {
+              type: 'requestSastContainerReports',
+            },
+            {
+              type: 'receiveSastContainerError',
+            },
+          ],
+          done,
+        );
+      });
+    });
+
+    describe('when feedback path errors', () => {
+      it('should dispatch `receiveSastContainerError`', done => {
+        mock.onGet('sast_container_diff.json').reply(200, diff);
+        mock
+          .onGet('vulnerabilities_feedback', {
+            params: {
+              category: 'container_scanning',
+            },
+          })
+          .reply(500);
+
+        testAction(
+          fetchSastContainerDiff,
+          null,
+          mockedState,
+          [],
+          [
+            {
+              type: 'requestSastContainerReports',
+            },
+            {
+              type: 'receiveSastContainerError',
+            },
+          ],
+          done,
+        );
+      });
+    });
+  });
 });