diff --git a/docker/build_image.py b/docker/build_image.py
index 8fab7f96..513a34b6 100644
--- a/docker/build_image.py
+++ b/docker/build_image.py
@@ -1,5 +1,4 @@
 import argparse
-import json
 import os
 import platform
 import re
@@ -10,6 +9,8 @@ from copy import copy
 from datetime import datetime
 from typing import Any, List, Optional
 
+import json
+
 docker_registry = os.environ['DOCKER_REGISTRY']
 assert docker_registry, 'You must pass a valid DOCKER_REGISTRY'
 timestamp = datetime.now()
@@ -507,16 +508,15 @@ class AmdImageBuilder(Builder):
     @classmethod
     def _fetch_rocm_tags(cls, page_size: int = 100) -> List[dict]:
         tags: List[dict] = []
-        url = (
-            f'https://hub.docker.com/v2/repositories/{VLLM_ROCM_REPO}/tags'
-            f'?page_size={page_size}&ordering=-last_updated')
+        url = (f'https://hub.docker.com/v2/repositories/{VLLM_ROCM_REPO}/tags'
+               f'?page_size={page_size}&ordering=-last_updated')
         while url:
             req = urllib.request.Request(
                 url, headers={'User-Agent': 'modelscope-docker-builder'})
             try:
                 with urllib.request.urlopen(req, timeout=60) as resp:
                     payload = json.load(resp)
-            except urllib.error.URLError as exc:
+            except (urllib.error.URLError, json.JSONDecodeError) as exc:
                 raise RuntimeError(
                     f'Failed to query Docker Hub tags for {VLLM_ROCM_REPO}: '
                     f'{exc}') from exc
@@ -569,8 +569,8 @@ class AmdImageBuilder(Builder):
     def init_args(self, args: Any) -> Any:
         # Auto-discover from Docker Hub unless an explicit override is given.
         override = getattr(args, 'base_image_tag', None)
-        if override and str(override).strip() and str(override).strip().lower(
-        ) not in {'auto', 'latest'}:
+        if override and str(override).strip() and str(
+                override).strip().lower() not in {'auto', 'latest'}:
             args.base_image_tag = str(override).strip()
             if not self._is_specific_release_tag(args.base_image_tag):
                 raise ValueError(
@@ -630,9 +630,9 @@ class AmdImageBuilder(Builder):
             ' if os.environ.get(k): info[k.lower()]=os.environ[k]\n'
             'print(json.dumps(info))\n')
         for py in ('python3', 'python'):
-            result = cls._run_capture(
-                'docker', 'run', '--rm', '--network', 'none', '--entrypoint',
-                py, base_image, '-c', script)
+            result = cls._run_capture('docker', 'run', '--rm', '--network',
+                                      'none', '--entrypoint', py, base_image,
+                                      '-c', script)
             if result.returncode == 0 and result.stdout.strip():
                 try:
                     return json.loads(result.stdout.strip().splitlines()[-1])
@@ -714,9 +714,11 @@ class AmdImageBuilder(Builder):
 
         versions = {
             'rocm': cls._normalize_version(rocm) if rocm else None,
-            'python': cls._normalize_version(python_ver) if python_ver else None,
+            'python':
+            cls._normalize_version(python_ver) if python_ver else None,
             'torch': cls._normalize_version(torch_ver) if torch_ver else None,
-            'ubuntu': cls._normalize_version(ubuntu_ver) if ubuntu_ver else None,
+            'ubuntu':
+            cls._normalize_version(ubuntu_ver) if ubuntu_ver else None,
         }
         print('Probed AMD base image versions:')
         for key, value in versions.items():
@@ -744,9 +746,8 @@ class AmdImageBuilder(Builder):
             raise RuntimeError(
                 'AMD image tag requires probed rocm/python/torch versions. '
                 f'Got rocm={rocm}, python={py_tag}, torch={torch}')
-        return (
-            f'{docker_registry}:ubuntu{ubuntu}-rocm{rocm}-{py_tag}-'
-            f'torch{torch}-{self.args.modelscope_version}-test')
+        return (f'{docker_registry}:ubuntu{ubuntu}-rocm{rocm}-{py_tag}-'
+                f'torch{torch}-{self.args.modelscope_version}-test')
 
     def _log_base_image_info(self) -> int:
         base_image = self.args.base_image
@@ -767,8 +768,8 @@ class AmdImageBuilder(Builder):
             print(f'AMD base image inspect warning: {result.stderr.strip()}')
 
         versions = self.probe_base_image_versions(base_image)
-        if not versions.get('rocm') or not versions.get('python') or not versions.get(
-                'torch'):
+        if not versions.get('rocm') or not versions.get(
+                'python') or not versions.get('torch'):
             print('ERROR: failed to probe rocm/python/torch from base image')
             return 1
         self.args.amd_rocm_version = versions['rocm']
@@ -779,9 +780,7 @@ class AmdImageBuilder(Builder):
             self.args.amd_ubuntu_version = versions['ubuntu']
         else:
             self.args.amd_ubuntu_version = self.args.ubuntu_version
-        print(
-            f'AMD output image tag will be: {self.image()}'
-        )
+        print(f'AMD output image tag will be: {self.image()}')
         print('=' * 60)
         return 0
 
@@ -801,10 +800,9 @@ class AmdImageBuilder(Builder):
         rocm = self.args.amd_rocm_version
         py_tag = self.args.amd_python_tag
         torch = self.args.amd_torch_version
-        image_tag2 = (
-            f'{docker_registry}:ubuntu{ubuntu}-rocm{rocm}-{py_tag}-'
-            f'torch{torch}-{self.args.modelscope_version}-'
-            f'{formatted_time}-test')
+        image_tag2 = (f'{docker_registry}:ubuntu{ubuntu}-rocm{rocm}-{py_tag}-'
+                      f'torch{torch}-{self.args.modelscope_version}-'
+                      f'{formatted_time}-test')
         ret = self.run_cmd('docker', 'tag', image_name, image_tag2)
         if ret != 0:
             return ret
diff --git a/modelscope/utils/automodel_utils.py b/modelscope/utils/automodel_utils.py
index 73175dc6..1c46b296 100644
--- a/modelscope/utils/automodel_utils.py
+++ b/modelscope/utils/automodel_utils.py
@@ -147,12 +147,13 @@ def check_model_from_owner_group(model_dir: str,
     if group in owner_group:
         return True
     # Also check cache path pattern: {cache_root}/{owner}--{model_name}/snapshots/{revision}
-    # Require exactly "{owner}--{name}" format (2 segments split by --)
-    # to prevent spoofing via accounts like "iic--hacked" which would
-    # produce paths like "iic--hacked--evil" and bypass the check.
+    # Require exactly "{owner}--{name}" with both segments non-empty
+    # to prevent spoofing via accounts like "iic--hacked" (paths like
+    # "iic--hacked--evil") or empty names like "iic--".
     grandparent = os.path.basename(os.path.dirname(parent_dir))
     if '--' in grandparent:
         parts = grandparent.split('--')
-        if len(parts) == 2 and parts[0] in owner_group:
+        # Both owner and name must be non-empty; reject "iic--" / "--name".
+        if len(parts) == 2 and all(parts) and parts[0] in owner_group:
             return True
     return False
diff --git a/modelscope/utils/hf_util/patcher.py b/modelscope/utils/hf_util/patcher.py
index ee26d3d5..790eb02c 100644
--- a/modelscope/utils/hf_util/patcher.py
+++ b/modelscope/utils/hf_util/patcher.py
@@ -161,16 +161,43 @@ def _get_class_from_dynamic_module(class_reference, *args, **kwargs):
     When a config's ``auto_map`` references another repo, transformers calls
     ``get_class_from_dynamic_module`` to fetch it.  This wrapper ensures that
     fetch goes through ModelScope instead of HuggingFace.
+
+    Cross-repo ``auto_map`` entries use ``repo_id--module.Class``.  After
+    ``snapshot_download``, the local cache path may itself contain ``--``
+    (modelscope_hub 0.1.x layout: ``models/{owner}--{name}/snapshots/...``).
+    Re-joining that path with ``--`` would make transformers'
+    ``class_reference.split("--")`` raise ``ValueError``.  Instead, pass the
+    local directory as ``pretrained_model_name_or_path`` and the bare
+    ``module.Class`` as ``class_reference`` so transformers takes the
+    ``os.path.isdir`` branch.
     """
     from transformers.dynamic_module_utils import origin_get_class_from_dynamic_module
-    if 'pretrained_model_name_or_path' in inspect.signature(
-            origin_get_class_from_dynamic_module).parameters:
-        pretrained_model_name_or_path = args[0]
-        if not os.path.exists(pretrained_model_name_or_path):
-            from modelscope import snapshot_download
-            args[0] = snapshot_download(pretrained_model_name_or_path)
+    has_pretrained_arg = (
+        'pretrained_model_name_or_path'
+        in inspect.signature(origin_get_class_from_dynamic_module).parameters)
+    # Resolve pretrained_model_name_or_path from kwargs or positional args.
+    # ``args`` is a tuple; never mutate it in place.
+    pretrained_in_kwargs = False
+    pretrained_model_name_or_path = None
+    if has_pretrained_arg:
+        if 'pretrained_model_name_or_path' in kwargs:
+            pretrained_model_name_or_path = kwargs[
+                'pretrained_model_name_or_path']
+            pretrained_in_kwargs = True
+        elif args:
+            pretrained_model_name_or_path = args[0]
+    if (pretrained_model_name_or_path is not None
+            and not os.path.exists(pretrained_model_name_or_path)):
+        from modelscope import snapshot_download
+        downloaded_path = snapshot_download(pretrained_model_name_or_path)
+        if pretrained_in_kwargs:
+            kwargs['pretrained_model_name_or_path'] = downloaded_path
+        else:
+            args = (downloaded_path, ) + args[1:]
+        pretrained_model_name_or_path = downloaded_path
     if '--' in class_reference:
-        repo_id, class_reference = class_reference.split('--')
+        # Only the first ``--`` is the auto_map delimiter (repo vs module).
+        repo_id, class_reference = class_reference.split('--', 1)
         if not os.path.exists(repo_id):
             download_kwargs = {}
             extra_allow_file_pattern = _decide_allow_file_pattern(
@@ -182,7 +209,18 @@ def _get_class_from_dynamic_module(class_reference, *args, **kwargs):
                 download_kwargs['ignore_file_pattern'] = ignore_file_pattern
             from modelscope import snapshot_download
             repo_id = snapshot_download(repo_id, **download_kwargs)
-        class_reference = repo_id + '--' + class_reference
+        if has_pretrained_arg:
+            # Local path + bare class name; do not rejoin with ``--``.
+            # Keep kwargs/positional form consistent with the original call.
+            if pretrained_in_kwargs:
+                kwargs['pretrained_model_name_or_path'] = repo_id
+            else:
+                args = (repo_id, ) + args[1:]
+        else:
+            # Legacy transformers without pretrained_model_name_or_path.
+            # Unsafe if repo_id (local cache) contains '--'; modern
+            # transformers always take the branch above.
+            class_reference = repo_id + '--' + class_reference
     return origin_get_class_from_dynamic_module(class_reference, *args,
                                                 **kwargs)
 
diff --git a/modelscope/utils/plugins.py b/modelscope/utils/plugins.py
index fa4cb877..cd8a2135 100644
--- a/modelscope/utils/plugins.py
+++ b/modelscope/utils/plugins.py
@@ -374,6 +374,30 @@ def create_module_from_files(file_list, file_prefix, module_name):
     importlib.invalidate_caches()
 
 
+def _module_name_from_model_dir(model_dir: str) -> str:
+    """Derive a valid Python package name from a local model directory.
+
+    modelscope_hub 0.1.x returns paths like
+    ``{cache}/models/{owner}--{name}/snapshots/{revision}``.  Using
+    ``Path(model_dir).stem`` on a revision such as ``v1.0.4`` yields
+    ``v1.0``, and ``importlib.import_module('v1.0.xxx')`` fails with
+    ``ModuleNotFoundError: No module named 'v1'`` because dots are package
+    separators.  Prefer the ``{owner}--{name}`` segment (plus revision for
+    isolation) and sanitize to a valid identifier.
+    """
+    path = Path(model_dir).resolve()
+    if path.parent.name == 'snapshots':
+        base = f'{path.parent.parent.name}__{path.name}'
+    else:
+        # Use the full directory name, not .stem, so dotted names are kept
+        # intact before sanitization (stem would turn ``v1.0.4`` into ``v1.0``).
+        base = path.name
+    module_name = re.sub(r'[^0-9A-Za-z_]', '_', base)
+    if not module_name or module_name[0].isdigit():
+        module_name = f'm_{module_name}'
+    return module_name
+
+
 def import_module_from_model_dir(model_dir):
     """ import all the necessary module from a model dir
 
@@ -383,7 +407,6 @@ def import_module_from_model_dir(model_dir):
      No returns, raise error if failed
 
     """
-    from pathlib import Path
     file_scanner = FilesAstScanning()
     file_scanner.traversal_files(model_dir, include_init=True)
     file_dirs = file_scanner.file_dirs
@@ -395,7 +418,7 @@ def import_module_from_model_dir(model_dir):
     if BASE_MODULE_DIR not in sys.path:
         sys.path.append(BASE_MODULE_DIR)
 
-    module_name = Path(model_dir).stem
+    module_name = _module_name_from_model_dir(model_dir)
 
     # in order to keep forward compatibility, we add module path to
     # sys.path so that submodule can be imported directly as before
diff --git a/tests/msdatasets/test_stream_load.py b/tests/msdatasets/test_stream_load.py
index 87bbf096..4ed0c3f3 100644
--- a/tests/msdatasets/test_stream_load.py
+++ b/tests/msdatasets/test_stream_load.py
@@ -44,15 +44,12 @@ class TestStreamLoad(unittest.TestCase):
                     pass
 
             self.assertIs(HfFileSystem._open, hf_datasets_util._hf_fs_open)
-            self.assertIsNot(
-                hf_datasets_util._hf_fs_open_original,
-                hf_datasets_util._hf_fs_open)
-            self.assertIs(
-                HfFileSystem.__init__,
-                hf_datasets_util._hf_fs_init_with_cookie)
-            self.assertIsNot(
-                hf_datasets_util._hf_fs_init_original,
-                hf_datasets_util._hf_fs_init_with_cookie)
+            self.assertIsNot(hf_datasets_util._hf_fs_open_original,
+                             hf_datasets_util._hf_fs_open)
+            self.assertIs(HfFileSystem.__init__,
+                          hf_datasets_util._hf_fs_init_with_cookie)
+            self.assertIsNot(hf_datasets_util._hf_fs_init_original,
+                             hf_datasets_util._hf_fs_init_with_cookie)
         finally:
             HfFileSystem._open = hf_fs_open_before
             HfFileSystem.__init__ = hf_fs_init_before
@@ -75,7 +72,8 @@ class TestStreamLoad(unittest.TestCase):
                     'load_dataset',
                     side_effect=RuntimeError('load failed')):
                 with self.assertRaises(RuntimeError):
-                    with hf_datasets_util.load_dataset_with_ctx(streaming=True):
+                    with hf_datasets_util.load_dataset_with_ctx(
+                            streaming=True):
                         pass
 
             self.assertIs(HfFileSystem._open, hf_fs_open_clean)
diff --git a/tests/utils/test_hf_util.py b/tests/utils/test_hf_util.py
index 1dd52b39..4e98d57f 100644
--- a/tests/utils/test_hf_util.py
+++ b/tests/utils/test_hf_util.py
@@ -249,19 +249,182 @@ class HFUtilTest(unittest.TestCase):
             f'Expected no weight files in {model_dir}, but found: '
             f"{[f for f in files if f.endswith('.safetensors') or f.endswith('.bin')]}"
         )
-        cache_dir = os.path.dirname(model_dir)
-        cache_dir = os.path.dirname(cache_dir)
-        model_dir_2 = os.path.join(cache_dir, 'nomic-ai', 'nomic-bert-2048')
-        if os.path.exists(model_dir_2):
-            files = os.listdir(model_dir_2)
-            has_weight_files = any(
-                f.endswith('.safetensors') or f.endswith('.bin')
-                for f in files)
-            self.assertFalse(
-                has_weight_files,
-                f'Expected no weight files in {model_dir}, but found: '
-                f"{[f for f in files if f.endswith('.safetensors') or f.endswith('.bin')]}"
-            )
+        # modelscope_hub 0.1.x layout uses models/{owner}--{name}/...;
+        # older layout used {owner}/{name}/.  Accept either.
+        cache_root = model_dir
+        for _ in range(4):
+            parent = os.path.dirname(cache_root)
+            if parent == cache_root:
+                break
+            cache_root = parent
+            candidates = [
+                os.path.join(cache_root, 'nomic-ai', 'nomic-bert-2048'),
+                os.path.join(cache_root, 'models',
+                             'nomic-ai--nomic-bert-2048'),
+            ]
+            for model_dir_2 in candidates:
+                if not os.path.exists(model_dir_2):
+                    continue
+                # Walk into snapshots/{rev} if present.
+                check_dirs = [model_dir_2]
+                snapshots = os.path.join(model_dir_2, 'snapshots')
+                if os.path.isdir(snapshots):
+                    check_dirs.extend(
+                        os.path.join(snapshots, d)
+                        for d in os.listdir(snapshots)
+                        if os.path.isdir(os.path.join(snapshots, d)))
+                for check_dir in check_dirs:
+                    files = os.listdir(check_dir)
+                    has_weight_files = any(
+                        f.endswith('.safetensors') or f.endswith('.bin')
+                        for f in files)
+                    self.assertFalse(
+                        has_weight_files,
+                        f'Expected no weight files in {check_dir}, but found: '
+                        f"{[f for f in files if f.endswith('.safetensors') or f.endswith('.bin')]}"
+                    )
+
+    def test_dynamic_module_double_dash_cache_path(self):
+        """Cross-repo auto_map must survive cache paths that contain '--'.
+
+        modelscope_hub 0.1.x stores repos under ``models/{owner}--{name}/``.
+        Rejoining that path into ``class_reference`` with ``--`` makes
+        transformers' ``split("--")`` raise ValueError.
+        """
+        from unittest import mock
+
+        from modelscope.utils.hf_util.patcher import \
+            _get_class_from_dynamic_module
+
+        tmp = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp, ignore_errors=True)
+        local_path = os.path.join(tmp, 'models', 'nomic-ai--nomic-bert-2048',
+                                  'snapshots', 'rev')
+        os.makedirs(local_path)
+        pretrained = os.path.join(tmp, 'models',
+                                  'nomic-ai--nomic-embed-text-v1.5',
+                                  'snapshots', 'rev')
+        os.makedirs(pretrained)
+
+        captured = {}
+
+        def fake_origin(class_reference, pretrained_model_name_or_path, *args,
+                        **kwargs):
+            # Signature must match transformers so has_pretrained_arg is True.
+            captured['class_reference'] = class_reference
+            captured['pretrained'] = pretrained_model_name_or_path
+            return type('DummyConfig', (), {})
+
+        class_ref = ('nomic-ai/nomic-bert-2048--'
+                     'configuration_hf_nomic_bert.NomicBertConfig')
+
+        # create=True: do not permanently leave origin_* on the module
+        # (would break test_import_not_pollute_dynamic_module).
+        with mock.patch(
+                'transformers.dynamic_module_utils.origin_get_class_from_dynamic_module',
+                new=fake_origin,
+                create=True):
+            with mock.patch(
+                    'modelscope.snapshot_download', return_value=local_path):
+                _get_class_from_dynamic_module(class_ref, pretrained)
+
+        # Must pass bare module.Class (no '--') so transformers does not split.
+        self.assertEqual(captured['class_reference'],
+                         'configuration_hf_nomic_bert.NomicBertConfig')
+        # Local cache path (which contains '--') is pretrained_model_name_or_path.
+        self.assertEqual(captured['pretrained'], local_path)
+
+    def test_dynamic_module_remote_pretrained_tuple_args(self):
+        """Remote pretrained_model_name_or_path must not mutate args in place.
+
+        ``*args`` is a tuple; ``args[0] = snapshot_download(...)`` raises
+        TypeError.  Rebuild the tuple instead (regression from 9379504f).
+        """
+        from unittest import mock
+
+        from modelscope.utils.hf_util.patcher import \
+            _get_class_from_dynamic_module
+
+        tmp = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp, ignore_errors=True)
+        downloaded = os.path.join(tmp, 'models', 'org--model', 'snapshots',
+                                  'rev')
+        os.makedirs(downloaded)
+
+        captured = {}
+
+        def fake_origin(class_reference, pretrained_model_name_or_path, *args,
+                        **kwargs):
+            captured['class_reference'] = class_reference
+            captured['pretrained'] = pretrained_model_name_or_path
+            return type('DummyConfig', (), {})
+
+        # No '--' in class_reference: only the pretrained download branch runs.
+        remote_id = 'org/model-not-on-disk'
+        with mock.patch(
+                'transformers.dynamic_module_utils.origin_get_class_from_dynamic_module',
+                new=fake_origin,
+                create=True):
+            with mock.patch(
+                    'modelscope.snapshot_download',
+                    return_value=downloaded) as sd:
+                # Must not raise TypeError: 'tuple' object does not support
+                # item assignment.
+                _get_class_from_dynamic_module('modeling.Foo', remote_id)
+
+        sd.assert_called_once_with(remote_id)
+        self.assertEqual(captured['class_reference'], 'modeling.Foo')
+        self.assertEqual(captured['pretrained'], downloaded)
+
+    def test_dynamic_module_pretrained_via_kwargs(self):
+        """pretrained_model_name_or_path may be passed as a keyword argument."""
+        from unittest import mock
+
+        from modelscope.utils.hf_util.patcher import \
+            _get_class_from_dynamic_module
+
+        tmp = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp, ignore_errors=True)
+        downloaded = os.path.join(tmp, 'models', 'org--model', 'snapshots',
+                                  'rev')
+        cross_repo = os.path.join(tmp, 'models', 'org--other', 'snapshots',
+                                  'rev')
+        os.makedirs(downloaded)
+        os.makedirs(cross_repo)
+
+        captured = {}
+
+        def fake_origin(class_reference, pretrained_model_name_or_path, *args,
+                        **kwargs):
+            captured['class_reference'] = class_reference
+            captured['pretrained'] = pretrained_model_name_or_path
+            captured['kwargs'] = kwargs
+            return type('DummyConfig', (), {})
+
+        remote_id = 'org/model-not-on-disk'
+        class_ref = 'org/other--configuration_foo.FooConfig'
+
+        def fake_download(repo_id, **kwargs):
+            if repo_id == remote_id:
+                return downloaded
+            if repo_id == 'org/other':
+                return cross_repo
+            raise AssertionError(f'unexpected download: {repo_id}')
+
+        with mock.patch(
+                'transformers.dynamic_module_utils.origin_get_class_from_dynamic_module',
+                new=fake_origin,
+                create=True):
+            with mock.patch(
+                    'modelscope.snapshot_download', side_effect=fake_download):
+                # Keyword form: must download and not pass duplicate positional.
+                _get_class_from_dynamic_module(
+                    class_ref, pretrained_model_name_or_path=remote_id)
+
+        self.assertEqual(captured['class_reference'],
+                         'configuration_foo.FooConfig')
+        self.assertEqual(captured['pretrained'], cross_repo)
+        self.assertNotIn('pretrained_model_name_or_path', captured['kwargs'])
 
     def test_import_not_pollute_dynamic_module(self):
         """Importing from modelscope must not globally patch
diff --git a/tests/utils/test_owner_group_path_safety.py b/tests/utils/test_owner_group_path_safety.py
new file mode 100644
index 00000000..9a0bb5c6
--- /dev/null
+++ b/tests/utils/test_owner_group_path_safety.py
@@ -0,0 +1,30 @@
+# Copyright (c) Alibaba, Inc. and its affiliates.
+import unittest
+
+from modelscope.utils.automodel_utils import check_model_from_owner_group
+
+
+class OwnerGroupPathSafetyTest(unittest.TestCase):
+    """Safety checks for trusted-owner cache path recognition."""
+
+    def test_empty_name_cache_path_rejected(self):
+        # modelscope_hub layout: {cache}/{owner}--{name}/snapshots/{rev}
+        # Empty name ("iic--") must not be treated as a trusted owner path.
+        self.assertFalse(
+            check_model_from_owner_group('/cache/iic--/snapshots/v1'))
+        self.assertFalse(
+            check_model_from_owner_group('/cache/damo--/snapshots/v1'))
+
+    def test_valid_and_spoof_cache_paths(self):
+        self.assertTrue(
+            check_model_from_owner_group('/cache/iic--x/snapshots/v1'))
+        self.assertFalse(
+            check_model_from_owner_group('/cache/--iic/snapshots/v1'))
+        self.assertFalse(
+            check_model_from_owner_group(
+                '/cache/iic--hacked--evil/snapshots/v1'))
+        self.assertTrue(check_model_from_owner_group('/cache/iic/some_model'))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/tests/utils/test_plugin.py b/tests/utils/test_plugin.py
index bb01886a..fa0e2872 100644
--- a/tests/utils/test_plugin.py
+++ b/tests/utils/test_plugin.py
@@ -127,5 +127,40 @@ class PluginTest(unittest.TestCase):
         self.assertEqual(len(result.items()), len(OFFICIAL_PLUGINS))
 
 
+class ModuleNameFromModelDirTest(unittest.TestCase):
+    """Regression: snapshot revision paths must not become dotted module names."""
+
+    def test_snapshot_revision_with_dots(self):
+        from modelscope.utils.plugins import _module_name_from_model_dir
+
+        tmp = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp, ignore_errors=True)
+        model_dir = os.path.join(tmp, 'models',
+                                 'iic--cv_unet_skin_retouching_torch',
+                                 'snapshots', 'v1.0.4')
+        os.makedirs(model_dir)
+
+        name = _module_name_from_model_dir(model_dir)
+        self.assertNotIn('.', name)
+        self.assertTrue(
+            name.startswith('iic__cv_unet_skin_retouching_torch__v1_0_4'))
+        # Old Path(model_dir).stem produced 'v1.0', which importlib treats as
+        # package 'v1' → ModuleNotFoundError: No module named 'v1'.
+        self.assertNotEqual(name, 'v1.0')
+        self.assertFalse(name.startswith('v1'))
+
+    def test_flat_cache_layout_unchanged(self):
+        from modelscope.utils.plugins import _module_name_from_model_dir
+
+        tmp = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, tmp, ignore_errors=True)
+        model_dir = os.path.join(tmp, 'iic', 'cv_unet_skin_retouching_torch')
+        os.makedirs(model_dir)
+
+        self.assertEqual(
+            _module_name_from_model_dir(model_dir),
+            'cv_unet_skin_retouching_torch')
+
+
 if __name__ == '__main__':
     unittest.main()