Already fixed. No software will ever be fully secure, but it's good to know that the team at LastPass patches any vulnerabilities within 24 hours.
24 hours? What are you smoking? They were notified in JUNE and failed to act. This is why I never used or trusted this product. It's nothing but a joke.
13th June 2017: Reported to LastPass support with proof. Jed from LP confirms that he can reproduce the issue
20th June: Followed up asking for an ETA. Support confirm that there is no ETA
7th December: Followed up, ticket pushed to “level 3 support”. Johnny from LP confirms that there are no updates and it is “still being investigated”.
8th December: Informed support that I would be publishing the details, received no response.
24th December: Published the details, received no response.
28th December: Last Pass issues a patch to fix it.