diff --git a/checkov/common/bridgecrew/platform_integration.py b/checkov/common/bridgecrew/platform_integration.py
index 37782cd1f9c..0361087e917 100644
--- a/checkov/common/bridgecrew/platform_integration.py
+++ b/checkov/common/bridgecrew/platform_integration.py
@@ -323,17 +323,21 @@ def setup_http_manager(self, ca_certificate: str | None = None, no_cert_verify:
 
         if self.http:
             return
+        # The `https_proxy` environment variable might be scheme-less. urllib3.ProxyManager expects a scheme, so set
+        # to a default of http:// if missing.
+        parsed_proxy_url = urllib3.util.parse_url(os.environ['https_proxy'])
+        if not parsed_proxy_url.scheme:
+            parsed_proxy_url = parsed_proxy_url._replace(scheme='http')
         if ca_certificate:
             os.environ['REQUESTS_CA_BUNDLE'] = ca_certificate
             cert_reqs = 'CERT_NONE' if no_cert_verify else 'REQUIRED'
             logging.debug(f'Using CA cert {ca_certificate} and cert_reqs {cert_reqs}')
             try:
-                parsed_url = urllib3.util.parse_url(os.environ['https_proxy'])
                 self.http = urllib3.ProxyManager(
-                    os.environ['https_proxy'],
+                    parsed_proxy_url.url,
                     cert_reqs=cert_reqs,
                     ca_certs=ca_certificate,
-                    proxy_headers=urllib3.make_headers(proxy_basic_auth=parsed_url.auth),  # type:ignore[no-untyped-call]
+                    proxy_headers=urllib3.make_headers(proxy_basic_auth=parsed_proxy_url.auth),  # type:ignore[no-untyped-call]
                     timeout=self.http_timeout,
                     retries=self.http_retry,
                 )
@@ -348,11 +352,10 @@ def setup_http_manager(self, ca_certificate: str | None = None, no_cert_verify:
             cert_reqs = 'CERT_NONE' if no_cert_verify else None
             logging.debug(f'Using cert_reqs {cert_reqs}')
             try:
-                parsed_url = urllib3.util.parse_url(os.environ['https_proxy'])
                 self.http = urllib3.ProxyManager(
-                    os.environ['https_proxy'],
+                    parsed_proxy_url.url,
                     cert_reqs=cert_reqs,
-                    proxy_headers=urllib3.make_headers(proxy_basic_auth=parsed_url.auth),  # type:ignore[no-untyped-call]
+                    proxy_headers=urllib3.make_headers(proxy_basic_auth=parsed_proxy_url.auth),  # type:ignore[no-untyped-call]
                     timeout=self.http_timeout,
                     retries=self.http_retry,
                 )
diff --git a/tests/common/test_platform_integration.py b/tests/common/test_platform_integration.py
index c0c6271de6a..3d8f69bde79 100644
--- a/tests/common/test_platform_integration.py
+++ b/tests/common/test_platform_integration.py
@@ -169,6 +169,16 @@ def test_add_static_policy_filters(self):
         self.assertListEqual(BcPlatformIntegration.add_static_policy_filters([('policy.label', 'xyz'), ('policy.enabled', 'true')]), [('policy.label', 'xyz'), ('policy.enabled', 'true'), ('policy.subtype', 'build')])
         self.assertListEqual(BcPlatformIntegration.add_static_policy_filters([('policy.enabled', 'true'), ('policy.label', 'xyz'), ('policy.subtype', 'build')]), [('policy.enabled', 'true'), ('policy.label', 'xyz'), ('policy.subtype', 'build')])
 
+    def test_proxy_without_scheme(self):
+        current_proxy = os.environ['https_proxy']
+        try:
+            os.environ['https_proxy'] = "127.0.0.1"
+            instance = BcPlatformIntegration()
+            instance.api_url = 'https://www.bridgecrew.cloud/v1'
+            instance.setup_http_manager()
+        finally:
+            os.environ['https_proxy'] = current_proxy
+
     def test_setup_on_prem(self):
         instance = BcPlatformIntegration()