diff --git a/frontend/packages/helm-plugin/locales/en/helm-plugin.json b/frontend/packages/helm-plugin/locales/en/helm-plugin.json
index 7b35ec9c304..1c98ceea709 100644
--- a/frontend/packages/helm-plugin/locales/en/helm-plugin.json
+++ b/frontend/packages/helm-plugin/locales/en/helm-plugin.json
@@ -79,6 +79,7 @@
   "HelmChartRepository": "HelmChartRepository",
   "Hide advanced options": "Hide advanced options",
   "Home page": "Home page",
+  "HTTP is unencrypted. Credentials may be exposed, and downloaded content may have been tampered with in transit. Use HTTPS whenever possible.": "HTTP is unencrypted. Credentials may be exposed, and downloaded content may have been tampered with in transit. Use HTTPS whenever possible.",
   "Install": "Install",
   "Install Helm chart from Helm registry.": "Install Helm chart from Helm registry.",
   "Install Helm chart from URL": "Install Helm chart from URL",
diff --git a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepository.tsx b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepository.tsx
index b95f667c7fa..e659a3c468c 100644
--- a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepository.tsx
+++ b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepository.tsx
@@ -26,6 +26,7 @@ import {
   getDefaultResource,
   convertToForm,
   convertToHelmChartRepository,
+  tryHttpsUpgrade,
 } from './helmchartrepository-create-utils';
 import { validationSchema } from './helmchartrepository-validation-utils';
 
@@ -110,6 +111,12 @@ const CreateHelmChartRepository: FC<CreateHelmChartRepositoryProps> = ({
       HelmChartRepositoryRes = convertToHelmChartRepository(values.formData, namespace);
     }
 
+    const currentUrl = HelmChartRepositoryRes.spec?.connectionConfig?.url;
+    const upgradedUrl = await tryHttpsUpgrade(currentUrl);
+    if (upgradedUrl) {
+      HelmChartRepositoryRes.spec.connectionConfig.url = upgradedUrl;
+    }
+
     const resourceCall = isEditForm
       ? k8sUpdateResource({
           model: modelFor(referenceFor(HelmChartRepositoryRes)),
diff --git a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepositoryFormEditor.tsx b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepositoryFormEditor.tsx
index a3b339f8218..f86d4d401b9 100644
--- a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepositoryFormEditor.tsx
+++ b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/CreateHelmChartRepositoryFormEditor.tsx
@@ -1,6 +1,6 @@
 import type { FC } from 'react';
 import { useMemo } from 'react';
-import { TextInputTypes } from '@patternfly/react-core';
+import { TextInputTypes, Alert } from '@patternfly/react-core';
 import type { FormikValues } from 'formik';
 import { useFormikContext } from 'formik';
 import * as fuzzy from 'fuzzysearch';
@@ -142,6 +142,18 @@ const CreateHelmChartRepositoryFormEditor: FC<CreateHelmChartRepositoryFormEdito
         helpText={t('Helm Chart repository URL.')}
         required
       />
+      {formData.repoUrl?.startsWith('http://') && (
+        <>
+          <Alert
+            variant="warning"
+            isInline
+            isPlain
+            title={t(
+              'HTTP is unencrypted. Credentials may be exposed, and downloaded content may have been tampered with in transit. Use HTTPS whenever possible.',
+            )}
+          />
+        </>
+      )}
       <ExpandCollapse
         textExpanded={t('Hide advanced options')}
         textCollapsed={t('Show advanced options')}
diff --git a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/__tests__/helmchartrepository-create-utils-https-upgrade.spec.ts b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/__tests__/helmchartrepository-create-utils-https-upgrade.spec.ts
new file mode 100644
index 00000000000..85fcbf86a4e
--- /dev/null
+++ b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/__tests__/helmchartrepository-create-utils-https-upgrade.spec.ts
@@ -0,0 +1,67 @@
+import { tryHttpsUpgrade } from '../helmchartrepository-create-utils';
+
+describe('tryHttpsUpgrade', () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    jest.useRealTimers();
+  });
+
+  it('should return https URL when server responds with 200', async () => {
+    global.fetch = jest.fn().mockResolvedValue(new Response(null, { status: 200 }));
+    const result = await tryHttpsUpgrade('http://example.com/repo');
+    expect(result).toBe('https://example.com/repo');
+    expect(global.fetch).toHaveBeenCalledWith(
+      'https://example.com/repo',
+      expect.objectContaining({ method: 'HEAD' }),
+    );
+  });
+
+  it('should return null when server responds with a non-OK status', async () => {
+    global.fetch = jest.fn().mockResolvedValue(new Response(null, { status: 404 }));
+    const result = await tryHttpsUpgrade('http://example.com/repo');
+    expect(result).toBeNull();
+  });
+
+  it('should return null when server responds with 500', async () => {
+    global.fetch = jest.fn().mockResolvedValue(new Response(null, { status: 500 }));
+    const result = await tryHttpsUpgrade('http://example.com/repo');
+    expect(result).toBeNull();
+  });
+
+  it('should return null when server does not support HTTPS', async () => {
+    global.fetch = jest.fn().mockRejectedValue(new TypeError('Failed to fetch'));
+    const result = await tryHttpsUpgrade('http://example.com/repo');
+    expect(result).toBeNull();
+  });
+
+  it('should return null for HTTPS URLs', async () => {
+    const result = await tryHttpsUpgrade('https://example.com');
+    expect(result).toBeNull();
+  });
+
+  it('should return null for OCI URLs', async () => {
+    const result = await tryHttpsUpgrade('oci://registry.io/chart');
+    expect(result).toBeNull();
+  });
+
+  it('should return null for null or undefined input', async () => {
+    expect(await tryHttpsUpgrade(null)).toBeNull();
+    expect(await tryHttpsUpgrade(undefined)).toBeNull();
+  });
+
+  it('should return null when fetch times out', async () => {
+    global.fetch = jest.fn().mockImplementation(
+      (_url, options) =>
+        new Promise((_resolve, reject) => {
+          options.signal.addEventListener('abort', () => reject(new DOMException('Aborted')));
+        }),
+    );
+    jest.useFakeTimers();
+    const promise = tryHttpsUpgrade('http://slow-server.com/repo');
+    jest.advanceTimersByTime(3000);
+    const result = await promise;
+    expect(result).toBeNull();
+  });
+});
diff --git a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/helmchartrepository-create-utils.ts b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/helmchartrepository-create-utils.ts
index 9413575ff60..1426be2b8b7 100644
--- a/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/helmchartrepository-create-utils.ts
+++ b/frontend/packages/helm-plugin/src/components/forms/HelmChartRepository/helmchartrepository-create-utils.ts
@@ -72,6 +72,25 @@ export const convertToHelmChartRepository = (
   return newResource;
 };
 
+const HTTPS_PROBE_TIMEOUT_MS = 3000;
+
+export const tryHttpsUpgrade = async (httpUrl: string): Promise<string | null> => {
+  if (!httpUrl?.startsWith('http://')) {
+    return null;
+  }
+  const httpsUrl = httpUrl.replace(/^http:\/\//, 'https://');
+  const controller = new AbortController();
+  const timeoutId = setTimeout(() => controller.abort(), HTTPS_PROBE_TIMEOUT_MS);
+  try {
+    const response = await fetch(httpsUrl, { method: 'HEAD', signal: controller.signal });
+    return response.ok ? httpsUrl : null;
+  } catch {
+    return null;
+  } finally {
+    clearTimeout(timeoutId);
+  }
+};
+
 export const getDefaultResource = (
   namespace: string,
   kindRef?: K8sResourceKindReference,