GHSA-q9m2-fhv9-3jcf `potato-annotation` has a Project-Boundary Bypass

• PyPI potato-annotation: >= 2.0.0, < 2.4.5 → fixed in 2.4.5

Summary `validate_path_security` uses string-prefix containment (`startswith`) for boundary checks. This allows paths that are outside the intended project directory but share its prefix string (e.g., `/tmp/potato_proj_demo_evil/...` vs `/tmp/potato_proj_demo`) to be accepted. Details Affected source location (root cause) File: `potato/server_utils/config_module.py` Snippet (lines 370–373): ```python real_path = os.path.realpath(normalized_path) real_base = os.path.realpath(base_dir) if not real_path.startswith(real_base): raise ConfigSecurityError(...) ``` Snippet (lines 384–389): ```python real_path = os.path.realpath(normalized_path) check_dir = project_dir if project_dir else base_dir real_check_dir = os.path.realpath(check_dir) if not real_path.startswith(real_check_dir): raise ConfigSecurityError(...) ``` `startswith()` is string-based, so `/tmp/potato_proj_demo_evil/...` passes when checked against `/tmp/potato_proj_demo`. Confirmed affected call sites File: `potato/server_utils/config_module.py` 1) `validate_file_paths` task_dir branch (line 2113) ```python validated_task_dir = validate_path_security(task_dir, project_dir) ``` 2) `validate_file_paths` data_files branch (line 2151) ```python validated_path = validate_path_security(file_path, base_dir, project_dir) ``` 3) `validate_training_config` training.data_file branch (line 2286) ```python validated_path = validate_path_security(data_file, base_dir, project_dir) ``` PoC ```python from potato.server_utils.config_module import validate_path_security base = '/tmp/potato_proj_demo' vuln = '/tmp/potato_proj_demo_evil/file.txt' try: print('inside=', validate_path_security('/tmp/potato_proj_demo/file.txt', base, base)) except Exception as e: print('inside_error=', type(e).__name__, e) try: validate_path_security('/tmp/other_demo/file.txt', base, base) except Exception as e: print('baseline=', type(e).__name__, e) print('trigger=', validate_path_security(vuln, base, base)) ``` Impact • Can allow unauthorized sibling-prefix file access outside intended project boundary. • Can affect read paths (`data_files`, `training.data_file`, `base_css`, `header_logo`) and output/path placement depending on configuration.