@chudbere If you're running Soapbox with an outdated GlitchSocial backend, almost certainly yes. In Pleroma/Reased, unconfirmed (we should probably remove HTML posting). I'm patching it in Soapbox shortly to be safe.
I have not run an update on Soapbox since our initial install in September, will you announce when the patch is ready? And is there a guide anywhere on how to pull an update once it is ready?