LastPass members have reported multiple breaches.

LastPass members have reported multiple attempted logins using correct master passwords from various locations and currently, LastPass seems to be integrating the issue.

However, Various users have been reported as the above. As a user safety measure, it is always better to be prepared for the worst-case scenario and make sure to mitigate those though at least changing a new master password.

Reference:
Ask HN: How did my LastPass master password get leaked? | Hacker News (ycombinator.com)
LastPass says no passwords compromised in latest security scare – CNET