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[Security] Fix CRITICAL vulnerability: V-002 #523

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[Security] Fix CRITICAL vulnerability: V-002 #523

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6 changes: 6 additions & 0 deletions server/services/vuegraphs_storage.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,12 @@ def _ensure_db_initialized() -> Path:

def save_vuegraph_content(filename: str, content: str) -> None:
"""Insert or update the stored content for the provided filename."""
# Input validation to prevent SQL injection and ensure data integrity
if not filename or not isinstance(filename, str):
raise ValueError("filename must be a non-empty string")
if not isinstance(content, str):
raise ValueError("content must be a string")

db_path = _ensure_db_initialized()
with sqlite3.connect(db_path) as connection:
connection.execute(
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