Merge branch 'main' into sentinel-ssrf-imap-9566695902417221069

app/utils/file_operations.py

@@ -7,8 +7,19 @@ def hash_file(filepath: str | Path, chunk_size: int = 65536) -> str:
     Returns the SHA-256 hash of the file at 'filepath'.
     Reads the file in chunks to handle large files efficiently.
     """
+    from app.config import settings
+
+    filepath_obj = Path(filepath).resolve()
+    workdir_obj = Path(settings.workdir).resolve()
+
+    # Security check: Ensure the resolved path is strictly within the allowed workdir
+    try:
+        filepath_obj.relative_to(workdir_obj)
+    except ValueError:
+        raise FileNotFoundError(f"Access denied: path traversal attempt or file outside workdir '{filepath}'")
+
     sha256 = hashlib.sha256()
-    with open(filepath, "rb") as f:
+    with open(filepath_obj, "rb") as f:
         while True:
             data = f.read(chunk_size)
             if not data: