diff --git a/tools/aegis4j/src/test/java/net/gredler/aegis4j/CVE_2021_23463.java b/tools/aegis4j/src/test/java/net/gredler/aegis4j/CVE_2021_23463.java
new file mode 100644
index 0000000000..a4928d9174
--- /dev/null
+++ b/tools/aegis4j/src/test/java/net/gredler/aegis4j/CVE_2021_23463.java
@@ -0,0 +1,142 @@
+/* Copyright (c) 2022, Daniel Gredler. All rights reserved. */
+
+package net.gredler.aegis4j;
+
+import org.h2.command.CommandInterface;
+import org.h2.engine.SessionInterface;
+import org.h2.jdbc.JdbcConnection;
+import org.h2.jdbc.JdbcSQLXML;
+import org.h2.message.Trace;
+import org.h2.store.DataHandler;
+import org.h2.value.Value;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.Test;
+
+import javax.xml.transform.dom.DOMSource;
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+/**
+ * Tests H2 SQL XML blocking.
+ */
+public class CVE_2021_23463 {
+    @AfterAll
+    public static void uninstallAgent() throws Exception {
+        System.clearProperty("aegis4j.additional.args");
+    }
+
+    @Test
+    public void test() throws Exception {
+        TestUtils.installAgent("path=../resources/test/h2-mods.properties");
+        try {
+            SessionInterface session = new SessionInterface() {
+                @Override
+                public ArrayList<String> getClusterServers() {
+                    return null;
+                }
+
+                @Override
+                public CommandInterface prepareCommand(String sql, int fetchSize) {
+                    return null;
+                }
+
+                @Override
+                public void close() {
+
+                }
+
+                @Override
+                public Trace getTrace() {
+                    return null;
+                }
+
+                @Override
+                public boolean isClosed() {
+                    return false;
+                }
+
+                @Override
+                public int getPowerOffCount() {
+                    return 0;
+                }
+
+                @Override
+                public void setPowerOffCount(int i) {
+
+                }
+
+                @Override
+                public DataHandler getDataHandler() {
+                    return null;
+                }
+
+                @Override
+                public boolean hasPendingTransaction() {
+                    return false;
+                }
+
+                @Override
+                public void cancel() {
+
+                }
+
+                @Override
+                public boolean isReconnectNeeded(boolean write) {
+                    return false;
+                }
+
+                @Override
+                public SessionInterface reconnect(boolean write) {
+                    return null;
+                }
+
+                @Override
+                public void afterWriting() {
+
+                }
+
+                @Override
+                public boolean getAutoCommit() {
+                    return false;
+                }
+
+                @Override
+                public void setAutoCommit(boolean autoCommit) {
+
+                }
+
+                @Override
+                public void addTemporaryLob(Value v) {
+
+                }
+
+                @Override
+                public boolean isRemote() {
+                    return false;
+                }
+
+                @Override
+                public void setCurrentSchemaName(String schema) {
+
+                }
+
+                @Override
+                public String getCurrentSchemaName() {
+                    return null;
+                }
+
+                @Override
+                public boolean isSupportsGeneratedKeys() {
+                    return false;
+                }
+            };
+            JdbcConnection connection = new JdbcConnection(session, "user", "url");
+            new JdbcSQLXML(connection, null, null, 0).getSource(DOMSource.class);
+            fail("Exception expected");
+        } catch (RuntimeException e) {
+            assertEquals("H2 SQL XML blocked by aegis4j", e.getMessage());
+        }
+    }
+}
diff --git a/tools/aegis4j/src/test/resources/h2-mods.properties b/tools/aegis4j/src/test/resources/h2-mods.properties
index 0b39eec274..55500f746a 100644
--- a/tools/aegis4j/src/test/resources/h2-mods.properties
+++ b/tools/aegis4j/src/test/resources/h2-mods.properties
@@ -1,3 +1,5 @@
 # format: <feature>.<class-name>.<method-name>=<replacement-code>
-# CVE-2018-10054, CVE-2021-42392, CVE-2018-14335
-H2.org.h2.server.web.WebServlet.WebServlet=throw new java.lang.RuntimeException("H2 Console blocked by aegis4j");
\ No newline at end of file
+# CVE-2018-10054, CVE-2021-42392, CVE-2018-14335, CVE-2022-23221, CVE-2022-45868
+H2.org.h2.server.web.WebServlet.WebServlet=throw new java.lang.RuntimeException("H2 Console blocked by aegis4j");
+# CVE-2021-23463
+H2.org.h2.jdbc.JdbcSQLXML.getSource=throw new java.lang.RuntimeException("H2 SQL XML blocked by aegis4j");
diff --git a/tools/cliutils/src/main/resources/mods.properties b/tools/cliutils/src/main/resources/mods.properties
index 071a219c47..a779ce8a28 100644
--- a/tools/cliutils/src/main/resources/mods.properties
+++ b/tools/cliutils/src/main/resources/mods.properties
@@ -64,5 +64,7 @@ KOTLIN.kotlin.io.FilesKt__UtilsKt.createTempFile=throw new java.lang.RuntimeExce
 GUAVA.com.google.common.io.Files.createTempDir=throw new java.lang.RuntimeException("Guava createTempDir blocked by aegis4j");
 # CVE-2019-16869 - HttpObjectDecoder was called HttpMessageDecoder back then
 NETTYHTTP.org.jboss.netty.handler.codec.http.HttpMessageDecoder.HttpMessageDecoder=throw new java.lang.RuntimeException("netty-codec-http HttpMessageDecoder blocked by aegis4j");
-# CVE-2018-10054, CVE-2021-42392, CVE-2018-14335
-H2.org.h2.server.web.WebServlet.WebServlet=throw new java.lang.RuntimeException("H2 Console blocked by aegis4j");
\ No newline at end of file
+# CVE-2018-10054, CVE-2021-42392, CVE-2018-14335, CVE-2022-23221, CVE-2022-45868
+H2.org.h2.server.web.WebServlet.WebServlet=throw new java.lang.RuntimeException("H2 Console blocked by aegis4j");
+# CVE-2021-23463
+H2.org.h2.jdbc.JdbcSQLXML.getSource=throw new java.lang.RuntimeException("H2 SQL XML blocked by aegis4j");