diff --git a/.gitignore b/.gitignore
index 724f6157..cb8d0dad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -90,4 +90,12 @@ Irssi-Dist
 setup.cfg
 *.egg-info
 result
+Build-fuzz
+
+# Fuzzing artifacts (runtime corpus and crash/leak files)
 corpus/
+crash-*
+leak-*
+oom-*
+timeout-*
+slow-unit-*
diff --git a/fuzz-corpora/event-get-params-fuzz/seed1 b/fuzz-corpora/event-get-params-fuzz/seed1
new file mode 100644
index 00000000..b6c6a129
Binary files /dev/null and b/fuzz-corpora/event-get-params-fuzz/seed1 differ
diff --git a/fuzz-corpora/event-get-params-fuzz/seed2 b/fuzz-corpora/event-get-params-fuzz/seed2
new file mode 100644
index 00000000..a32448a0
--- /dev/null
+++ b/fuzz-corpora/event-get-params-fuzz/seed2
@@ -0,0 +1 @@
+
user1 user2 user3
\ No newline at end of file
diff --git a/fuzz-corpora/event-get-params-fuzz/seed3 b/fuzz-corpora/event-get-params-fuzz/seed3
new file mode 100644
index 00000000..803414c8
--- /dev/null
+++ b/fuzz-corpora/event-get-params-fuzz/seed3
@@ -0,0 +1 @@
+:server PRIVMSG #channel :test
\ No newline at end of file
diff --git a/fuzz-corpora/event-get-params-fuzz/seed4 b/fuzz-corpora/event-get-params-fuzz/seed4
new file mode 100644
index 00000000..6dcb0711
--- /dev/null
+++ b/fuzz-corpora/event-get-params-fuzz/seed4
@@ -0,0 +1 @@
+one two three four
\ No newline at end of file
diff --git a/fuzz-corpora/irssi-fuzz/seed1 b/fuzz-corpora/irssi-fuzz/seed1
new file mode 100644
index 00000000..802992c4
--- /dev/null
+++ b/fuzz-corpora/irssi-fuzz/seed1
@@ -0,0 +1 @@
+Hello world
diff --git a/fuzz-corpora/irssi-fuzz/seed2 b/fuzz-corpora/irssi-fuzz/seed2
new file mode 100644
index 00000000..5ce9b8d9
--- /dev/null
+++ b/fuzz-corpora/irssi-fuzz/seed2
@@ -0,0 +1 @@
+Test with colors
diff --git a/fuzz-corpora/irssi-fuzz/seed3 b/fuzz-corpora/irssi-fuzz/seed3
new file mode 100644
index 00000000..3cdaeedf
--- /dev/null
+++ b/fuzz-corpora/irssi-fuzz/seed3
@@ -0,0 +1 @@
+%Bbold%n %Uunderline%n %9reverse%n
diff --git a/fuzz-corpora/server-fuzz/seed1 b/fuzz-corpora/server-fuzz/seed1
new file mode 100644
index 00000000..a6945aee
Binary files /dev/null and b/fuzz-corpora/server-fuzz/seed1 differ
diff --git a/fuzz-corpora/server-fuzz/seed2 b/fuzz-corpora/server-fuzz/seed2
new file mode 100644
index 00000000..df6a960e
Binary files /dev/null and b/fuzz-corpora/server-fuzz/seed2 differ
diff --git a/fuzz-corpora/server-fuzz/seed3 b/fuzz-corpora/server-fuzz/seed3
new file mode 100644
index 00000000..54e5e6c0
Binary files /dev/null and b/fuzz-corpora/server-fuzz/seed3 differ
diff --git a/fuzz-corpora/server-fuzz/seed4 b/fuzz-corpora/server-fuzz/seed4
new file mode 100644
index 00000000..ca3c0bd8
--- /dev/null
+++ b/fuzz-corpora/server-fuzz/seed4
@@ -0,0 +1 @@
+
:nick!user@host JOIN #channel
diff --git a/fuzz-corpora/server-fuzz/seed5 b/fuzz-corpora/server-fuzz/seed5
new file mode 100644
index 00000000..7d7bce70
Binary files /dev/null and b/fuzz-corpora/server-fuzz/seed5 differ
diff --git a/fuzz-corpora/server-fuzz/seed6 b/fuzz-corpora/server-fuzz/seed6
new file mode 100644
index 00000000..bd4512c0
Binary files /dev/null and b/fuzz-corpora/server-fuzz/seed6 differ
diff --git a/fuzz-corpora/theme-load-fuzz/seed1 b/fuzz-corpora/theme-load-fuzz/seed1
new file mode 100644
index 00000000..e5833d51
--- /dev/null
+++ b/fuzz-corpora/theme-load-fuzz/seed1
@@ -0,0 +1,5 @@
+abstracts = {
+  line_start = "%B-%W!%B-%n ";
+  timestamp = "%K$0-%n ";
+  hilight = "%_$*%_";
+};
diff --git a/fuzz-corpora/theme-load-fuzz/seed2 b/fuzz-corpora/theme-load-fuzz/seed2
new file mode 100644
index 00000000..ae19c434
--- /dev/null
+++ b/fuzz-corpora/theme-load-fuzz/seed2
@@ -0,0 +1,2 @@
+default_color = "-1";
+replaces = { "[]=" = "%K$*%n"; };