In case you missed it, Weasyl has announced (via their Weasyl Dev Twitter) that they will be opening up their source code! While details and specifics are still being ironed out, they've also made an official announcement on their main page, stating:
"It has been our goal to go open source for a some time, and has taken longer than we'd hoped to get permission from everyone who contributed code during our three years of operation, but now it's finally happening!"
I think it's also interesting to note that they reported in their twitter that they closed their ImageTragick exploit hole on May 3rd. I am always happy to hear when a website or company decides to open up their source. It can be a tough sell when people/businesses aren't familiar with the concept. Even the initial twitter announcement is has a smattering of skeptical comments from community members.