<s>
Flarum	B-Protocol
is	O
Internet	B-Application
forum	I-Application
software	I-Application
written	O
primarily	O
in	O
PHP	B-Application
,	O
and	O
a	O
combination	O
of	O
JavaScript	B-Language
and	O
TypeScript	B-Language
for	O
its	O
user	O
interface	O
.	O
</s>
<s>
It	O
was	O
created	O
as	O
part	O
of	O
a	O
merger	O
of	O
two	O
existing	O
forum	B-Application
software	I-Application
,	O
FluxBB	B-Language
and	O
esoTalk	O
,	O
and	O
their	O
two	O
main	O
developers	O
,	O
Franz	O
Liedke	O
and	O
Toby	O
Zerner	O
.	O
</s>
<s>
Flarum	B-Protocol
is	O
designed	O
to	O
be	O
minimal	O
forum	B-Application
software	I-Application
with	O
high	O
extensibility	O
.	O
</s>
<s>
Most	O
common	O
features	O
in	O
other	O
forum	B-Application
software	I-Application
are	O
extensions	O
to	O
Flarum	B-Protocol
's	O
core	O
software	O
,	O
such	O
as	O
locking	O
threads	O
,	O
private	O
messaging	O
,	O
flagging	O
posts	O
,	O
and	O
assigning	O
tags	O
(	O
categories	O
)	O
to	O
discussions	O
.	O
</s>
<s>
Flarum	B-Protocol
's	O
history	O
dates	O
back	O
long	O
before	O
the	O
merger	O
of	O
FluxBB	B-Language
and	O
esoTalk	O
.	O
</s>
<s>
Flarum	B-Protocol
's	O
philosophy	O
was	O
conceptualised	O
in	O
2010	O
by	O
Toby	O
Zerner	O
,	O
with	O
initial	O
designs	O
and	O
prototypes	O
being	O
created	O
as	O
early	O
as	O
2012	O
,	O
and	O
he	O
entered	O
Flarum	B-Protocol
into	O
the	O
University	O
of	O
Adelaide	O
's	O
eChallenge	O
programme	O
,	O
winning	O
the	O
2nd	O
place	O
prize	O
with	O
the	O
project	O
's	O
idea	O
.	O
</s>
<s>
In	O
October	O
2014	O
,	O
Toby	O
Zerner	O
and	O
his	O
friend	O
Stephen	O
Grace	O
launched	O
a	O
Kickstarter	O
crowdfunding	O
campaign	O
to	O
help	O
fund	O
Flarum	B-Protocol
's	O
development	O
at	O
a	O
time	O
when	O
Toby	O
was	O
studying	O
medicine	O
.	O
</s>
<s>
The	O
funds	O
raised	O
were	O
planned	O
to	O
allow	O
him	O
to	O
take	O
a	O
year	O
out	O
of	O
his	O
medical	O
training	O
in	O
order	O
to	O
develop	O
Flarum	B-Protocol
full-time	O
,	O
along	O
with	O
launching	O
a	O
paid	O
cloud	O
hosting	O
service	O
alongside	O
Flarum	B-Protocol
.	O
</s>
<s>
However	O
,	O
approximately	O
two	O
weeks	O
after	O
the	O
Kickstarter	O
launch	O
,	O
the	O
campaign	O
was	O
cancelled	O
,	O
instead	O
favoring	O
an	O
open-source	B-Application
and	O
public	O
approach	O
to	O
project	O
development	O
.	O
</s>
<s>
The	O
prototype	O
code	O
was	O
published	O
to	O
GitHub	B-Application
in	O
December	O
2014	O
.	O
</s>
<s>
The	O
original	O
Flarum	B-Protocol
prototypes	O
were	O
created	O
in	O
PHP	B-Application
and	O
JavaScript	B-Language
,	O
using	O
Laravel	B-Language
as	O
a	O
backend	B-Architecture
framework	I-Architecture
and	O
Ember.js	B-Language
as	O
a	O
frontend	B-Architecture
framework	I-Architecture
.	O
</s>
<s>
In	O
April	O
2015	O
,	O
Ember.js	B-Language
was	O
replaced	O
with	O
Mithril.js	O
,	O
which	O
is	O
still	O
used	O
in	O
the	O
latest	O
releases	O
of	O
Flarum	B-Protocol
.	O
</s>
<s>
On	O
August	O
27	O
,	O
2015	O
,	O
the	O
first	O
beta	O
version	O
of	O
Flarum	B-Protocol
was	O
released	O
to	O
the	O
public	O
.	O
</s>
<s>
On	O
July	O
4	O
,	O
2019	O
,	O
Toby	O
Zerner	O
announced	O
he	O
would	O
be	O
leaving	O
the	O
Flarum	B-Protocol
project	O
to	O
focus	O
on	O
his	O
own	O
premium	O
forum	B-Application
software	I-Application
,	O
leaving	O
Franz	O
Liedke	O
and	O
Daniël	O
Klabbers	O
to	O
lead	O
the	O
project	O
into	O
the	O
future	O
.	O
</s>
<s>
Following	O
Toby	O
's	O
departure	O
,	O
the	O
remaining	O
members	O
of	O
the	O
Flarum	B-Protocol
team	O
proceeded	O
to	O
found	O
the	O
non-profit	O
Flarum	B-Protocol
Foundation	O
(	O
Dutch	O
:	O
Stichting	O
Flarum	B-Protocol
)	O
to	O
be	O
the	O
legal	O
owner	O
of	O
the	O
Flarum	B-Protocol
open-source	B-Application
project	O
,	O
and	O
its	O
registered	O
trademark	O
.	O
</s>
<s>
In	O
February	O
2021	O
,	O
Franz	O
Liedke	O
announced	O
that	O
he	O
would	O
also	O
be	O
leaving	O
the	O
Flarum	B-Protocol
project	O
,	O
due	O
to	O
being	O
unable	O
to	O
consistently	O
dedicate	O
time	O
to	O
the	O
project	O
,	O
leaving	O
Daniël	O
Klabbers	O
to	O
lead	O
Flarum	B-Protocol
.	O
</s>
<s>
In	O
May	O
2021	O
,	O
the	O
first	O
stable	O
version	O
of	O
Flarum	B-Protocol
was	O
released	O
,	O
after	O
a	O
total	O
of	O
11	O
years	O
in	O
development	O
.	O
</s>
<s>
In	O
June	O
2021	O
,	O
a	O
critical	O
security	O
vulnerability	O
was	O
found	O
in	O
Flarum	B-Protocol
's	O
initial	O
stable	O
release	O
allowing	O
for	O
cross-site	O
scripting	O
attacks	O
against	O
other	O
users	O
through	O
clicking	O
a	O
URL	O
.	O
</s>
<s>
Shortly	O
after	O
Flarum	B-Protocol
's	O
initial	O
stable	O
release	O
,	O
a	O
cross-site	O
scripting	O
vulnerability	O
was	O
found	O
in	O
the	O
search	O
field	O
which	O
could	O
allow	O
users	O
to	O
execute	O
arbitrary	O
JavaScript	B-Language
code	O
without	O
a	O
user	O
's	O
permission	O
.	O
</s>
<s>
Following	O
this	O
vulnerability	O
,	O
the	O
Flarum	B-Protocol
team	O
opted	O
to	O
partner	O
with	O
open-source	B-Application
security	O
reporting	O
website	O
to	O
allow	O
for	O
a	O
more	O
streamlined	O
way	O
to	O
report	O
issues	O
,	O
as	O
well	O
as	O
providing	O
a	O
bounty	O
for	O
reports	O
and	O
fixes	O
without	O
costing	O
the	O
open-source	B-Application
project	O
money	O
.	O
</s>
