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-rw-r--r--src/modules/m_spanningtree/fjoin.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/modules/m_spanningtree/fjoin.cpp b/src/modules/m_spanningtree/fjoin.cpp
index 62d84c92d..c09220a3f 100644
--- a/src/modules/m_spanningtree/fjoin.cpp
+++ b/src/modules/m_spanningtree/fjoin.cpp
@@ -126,6 +126,9 @@ CmdResult CommandFJoin::Handle(User* srcuser, Params& params)
if (!chan)
{
+ if (!ServerInstance->Channels.IsPrefix(channel[0]))
+ throw ProtocolException("Malformed channel name in FJOIN '" + channel + '"');
+
chan = new Channel(channel, TS);
}
else