PYSEC-2026-3915 qwed-mcp has Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

Summary verifymathexpression in qwed-mcp v0.2.0 passes attacker-controlled strings directly to SymPy's parseexpr without restricting globaldict or validating the expression's AST. Because parseexpr internally calls eval and Python automatically injects the current module's builtins when no explic...