  It is well known that ($2+1$) dimensional charged BTZ (Banados, Teitelboim,
Zanelli) black hole can be overcharged by a charged scalar field and a charged
particle in contrast to their analogues in ($3+1$) and higher dimensions. In
this regard, it may play an important role to understand more deeply the
properties of the ($2+1$)-dimensional charged black hole in the
Einstein-Gauss-Bonnet (EGB) gravity. In this paper, we test the validity of the
weak cosmic censorship conjecture for the ($2+1$)-dimensional charged black
hole in novel EGB theory derived recently by Henniger et. al (2021). We show
that the minimum energy that particle can have at the horizon becomes negative
for both an extremal and nearly-extremal BTZ black holes in EGB gravity. It is
proven that both extremal and nearly-extremal $(2+1)$ dimensional BTZ black
hole could be overcharged in EGB theory, leading to the violation of the weak
cosmic censorship conjecture (WCCC), which is in good agreement with the
results obtained for the classical BTZ black hole.
