To quote the Cloudflare CEO, "I am not changing any of my passwords" but here's some info relating to this as Cloudflare is used by both Discord and WG.
News article: http://www.bbc.com/news/technology-39077611 (http://www.bbc.com/news/technology-39077611)
Discord blog: https://blog.discordapp.com/safety-jim-psa-cloudflare-security-issue-77a4ecc48298#.lm0ce23i9 (https://blog.discordapp.com/safety-jim-psa-cloudflare-security-issue-77a4ecc48298#.lm0ce23i9)
the most shocking part of this is that in the first article they use the word bigly
They thought it was going to be alot worse than it was when they got everything figured out.
only read the start of this blog but it looks like Cloudflare overreacted massively lol, possibly gonna pay for it in terms of losing customers or at least their confidence.
https://blog.cloudflare.com/quantifying-the-impact-of-cloudbleed/