BuddyPress was updated to version 2.5.3, from version 2.5.2. Changelog:
- Security: Don’t build user-facing hashes using seed values that are provided by the user.
- Emails: Make sure friendship request emails are properly sent.
- Emails: Add missing header background colour to email template.
- Emails: Prevent fatal errors when using email API with WordPress 4.2.6 and earlier.