Upgrade to rails 4.2.7.1 #283
Merged
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This will solve the most severe of the security vulnerabilities highlighted by GitHub. They are related to ActionView and ActiveRecord so we would be better off upgrading. You can see the full list of changes in rails/rails@v4.2.5.2...v4.2.7.1. Besides, as we all know it's a good practice to keep up to date ASAP.
The upgrade should be harmless as the changes are very limited. As soon as this passes CI, I'd give a general testing round and merge if we're happy with it.