One of the main benefits of Open-Source software is safety and reliability. Prestashop team and the community produce their best efforts to offer quality software and responsiveness in terms of patches availability.

So you benefitĀ a software continuously improved in terms of stability and security, which includes advice and recommendations from leading experts in each domain!

We strongly recommend you to update PrestaShop to correct these problems.

To update PrestaShop to this new version you can:
- Update PrestaShop with the new 1.3.1 version.
(This version is identical to the 1.3 version and fixes problems related to security)

or

- If you do not want to upgrade your PrestaShop shop, apply the following changes in your files:

Important: You must of course first and foremost, BACKUP your old files before applying these changes.

More detail at Prestashop.com