diff --git a/arcanist/linter/LocaleDependenceLinter.php b/arcanist/linter/LocaleDependenceLinter.php
--- a/arcanist/linter/LocaleDependenceLinter.php
+++ b/arcanist/linter/LocaleDependenceLinter.php
@@ -39,6 +39,7 @@
       "atoi",
       "strtol",
     ],
+    "src/test/fuzz/parse_numbers.cpp" => ["atoi"],
     "src/util/system.cpp" => ["atoi"],
     "src/util/strencodings.cpp" => [
       "atoi",
diff --git a/src/test/fuzz/CMakeLists.txt b/src/test/fuzz/CMakeLists.txt
--- a/src/test/fuzz/CMakeLists.txt
+++ b/src/test/fuzz/CMakeLists.txt
@@ -15,7 +15,7 @@
 	)
 	set_target_properties(${TARGET} PROPERTIES OUTPUT_NAME ${EXE_NAME})
 
-	target_link_libraries(${TARGET} server testutil)
+	target_link_libraries(${TARGET} server testutil rpcclient)
 
 	add_dependencies(bitcoin-fuzzers ${TARGET})
 
@@ -78,7 +78,11 @@
 	eval_script
 	integer
 	net_permissions
+	parse_hd_keypath
 	parse_iso8601
+	parse_numbers
+	parse_script
+	parse_univalue
 	process_message
 	psbt
 	script
diff --git a/src/test/fuzz/parse_hd_keypath.cpp b/src/test/fuzz/parse_hd_keypath.cpp
new file mode 100644
--- /dev/null
+++ b/src/test/fuzz/parse_hd_keypath.cpp
@@ -0,0 +1,13 @@
+// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <util/bip32.h>
+
+#include <test/fuzz/fuzz.h>
+
+void test_one_input(const std::vector<uint8_t> &buffer) {
+    const std::string keypath_str(buffer.begin(), buffer.end());
+    std::vector<uint32_t> keypath;
+    (void)ParseHDKeypath(keypath_str, keypath);
+}
diff --git a/src/test/fuzz/parse_numbers.cpp b/src/test/fuzz/parse_numbers.cpp
new file mode 100644
--- /dev/null
+++ b/src/test/fuzz/parse_numbers.cpp
@@ -0,0 +1,35 @@
+// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <util/moneystr.h>
+#include <util/strencodings.h>
+
+#include <test/fuzz/fuzz.h>
+
+#include <string>
+
+void test_one_input(const std::vector<uint8_t> &buffer) {
+    const std::string random_string(buffer.begin(), buffer.end());
+
+    Amount amount;
+    (void)ParseMoney(random_string, amount);
+
+    double d;
+    (void)ParseDouble(random_string, &d);
+
+    int32_t i32;
+    (void)ParseInt32(random_string, &i32);
+    (void)atoi(random_string);
+
+    uint32_t u32;
+    (void)ParseUInt32(random_string, &u32);
+
+    int64_t i64;
+    (void)atoi64(random_string);
+    (void)ParseFixedPoint(random_string, 3, &i64);
+    (void)ParseInt64(random_string, &i64);
+
+    uint64_t u64;
+    (void)ParseUInt64(random_string, &u64);
+}
diff --git a/src/test/fuzz/parse_script.cpp b/src/test/fuzz/parse_script.cpp
new file mode 100644
--- /dev/null
+++ b/src/test/fuzz/parse_script.cpp
@@ -0,0 +1,16 @@
+// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <core_io.h>
+#include <script/script.h>
+
+#include <test/fuzz/fuzz.h>
+
+void test_one_input(const std::vector<uint8_t> &buffer) {
+    const std::string script_string(buffer.begin(), buffer.end());
+    try {
+        (void)ParseScript(script_string);
+    } catch (const std::runtime_error &) {
+    }
+}
diff --git a/src/test/fuzz/parse_univalue.cpp b/src/test/fuzz/parse_univalue.cpp
new file mode 100644
--- /dev/null
+++ b/src/test/fuzz/parse_univalue.cpp
@@ -0,0 +1,84 @@
+// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <chainparams.h>
+#include <core_io.h>
+#include <rpc/client.h>
+#include <rpc/util.h>
+
+#include <test/fuzz/fuzz.h>
+
+#include <limits>
+#include <string>
+
+void initialize() {
+    static const auto verify_handle = std::make_unique<ECCVerifyHandle>();
+    SelectParams(CBaseChainParams::REGTEST);
+}
+
+void test_one_input(const std::vector<uint8_t> &buffer) {
+    const std::string random_string(buffer.begin(), buffer.end());
+    bool valid = true;
+    const UniValue univalue = [&] {
+        try {
+            return ParseNonRFCJSONValue(random_string);
+        } catch (const std::runtime_error &) {
+            valid = false;
+            return NullUniValue;
+        }
+    }();
+    if (!valid) {
+        return;
+    }
+    try {
+        (void)ParseHashO(univalue, "A");
+        (void)ParseHashO(univalue, random_string);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseHashV(univalue, "A");
+        (void)ParseHashV(univalue, random_string);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseHexO(univalue, "A");
+        (void)ParseHexO(univalue, random_string);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseHexUV(univalue, "A");
+        (void)ParseHexUV(univalue, random_string);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseHexV(univalue, "A");
+        (void)ParseHexV(univalue, random_string);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseSighashString(univalue);
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)AmountFromValue(univalue);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        FlatSigningProvider provider;
+        (void)EvalDescriptorStringOrObject(univalue, provider);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+    try {
+        (void)ParseDescriptorRange(univalue);
+    } catch (const UniValue &) {
+    } catch (const std::runtime_error &) {
+    }
+}