WhatsApp location sharing service could expose your location to hackers or Spy Agencies. While sharing the location on WhatsApp users need to first locate themselves on Google Map within the app window, as shown: Once selected, WhatsApp fetches the location and thumbnail (an image) from the Google Map service to share it as the message icon. WhatsApp downloads this image through an unencrypted channel from Google that could be sniffed during a Man-in-the-middle attack. The vulnerability has been fixed in the latest beta version of WhatsApp app available on their official website.
Source: https://thehackernews.com/2014/04/whatsapp-flaw-leaves-user-location.html