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Announcing the availability of 2.1.1, a security & bug fix release for 2.1.
It is imperative all 2.1 forums upgrade immediately.
HtmLawed was upgraded to close an XSS vector (thanks to Psych0tr1a for responsibly disclosing this to us & to HtmLawed for a fast patch in response).
As you can see, some extremely critical fixes are included. The only feature addition is those added to the Profile Extender addon as a result of getting backported from 2.2 (master) branch.
Diff of 2.1.1 against 2.1 gold. (32 files changed, so I don't recommend a selective upgrade on this one.)
18.104.22.168 has the same XSS issues and its patch will be released this weekend is available here as 22.214.171.124.