void Document::updateFocusAppearanceSoon(bool restorePreviousSelection)
{
    m_updateFocusAppearanceRestoresSelection = restorePreviousSelection;
    if (!m_updateFocusAppearanceTimer.isActive())
        m_updateFocusAppearanceTimer.startOneShot(0, FROM_HERE);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.