diff --git a/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/MetadataParserImpl.java b/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/MetadataParserImpl.java
index 0b12cde4a9d..14e28b4411d 100644
--- a/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/MetadataParserImpl.java
+++ b/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/MetadataParserImpl.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -108,6 +108,10 @@ protected void addMetadataItem(String tag, Object value) {
         metadata.put(tag, value);
     }
 
+    protected void disposeMetadata() {
+        metadata.clear();
+    }
+
     protected void done() {
         synchronized (listeners) {
             if (!metadata.isEmpty()) {
@@ -130,6 +134,10 @@ protected int getStreamPosition() {
         return streamPosition;
     }
 
+    protected long getStreamLength() {
+        return locator.getContentLength();
+    }
+
     protected void startRawMetadata(int sizeHint) {
         rawMetaBlob = ByteBuffer.allocate(sizeHint);
     }
diff --git a/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/platform/java/ID3MetadataParser.java b/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/platform/java/ID3MetadataParser.java
index 03c904af6e9..8910328c2ac 100644
--- a/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/platform/java/ID3MetadataParser.java
+++ b/modules/javafx.media/src/main/java/com/sun/media/jfxmediaimpl/platform/java/ID3MetadataParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,6 +38,11 @@ final class ID3MetadataParser extends MetadataParserImpl {
     private static final int ID3_VERSION_MIN = 2;
     private static final int ID3_VERSION_MAX = 4;
 
+    // Max tag size cannot be more than 256 MB
+    private static final int MAX_TAG_SIZE = 256 * 1024 * 1024;
+    // Max frame size cannot be more than 16 MB
+    private static final int MAX_FRAME_SIZE = 16 * 1024 * 1024;
+
     private static final String CHARSET_UTF_8 = "UTF-8";
     private static final String CHARSET_ISO_8859_1 = "ISO-8859-1";
     private static final String CHARSET_UTF_16 = "UTF-16";
@@ -46,6 +51,7 @@ final class ID3MetadataParser extends MetadataParserImpl {
     private int COMMCount = 0;
     private int TXXXCount = 0;
     private int version = 3; // Default to 3
+    private int tagSize = 0;
     private boolean unsynchronized = false;
 
     public ID3MetadataParser(Locator locator) {
@@ -82,12 +88,15 @@ protected void parse() {
                     unsynchronized = true;
                 }
 
-                int tagSize = 0;
                 for (int i = 6, shift = 21; i < 10; i++) {
                     tagSize += (buf[i] & 0x7f) << shift;
                     shift -= 7;
                 }
 
+                if (!validateTagSize()) {
+                    return; // Abort parser if tag size is invalid.
+                }
+
                 startRawMetadata(tagSize + 10);
                 stuffRawMetadata(buf, 0, 10); // put the header back in the raw metadata blob
                 readRawMetadata(tagSize);
@@ -108,6 +117,14 @@ protected void parse() {
                         skipBytes(2);
                     }
 
+                    if (!validateFrameSize(frameSize)) {
+                        // Dispose any parsed or partially parsed metadata
+                        disposeMetadata();
+                        setParseRawMetadata(false);
+                        disposeRawMetadata();
+                        return; // Abort parser if frame size is invalid.
+                    }
+
                     if (0 == idBytes[0]) {
                         // terminate on zero padding, NULL characters not allowed in frame ID
                         if (Logger.canLog(Logger.DEBUG)) {
@@ -239,6 +256,30 @@ protected void parse() {
         }
     }
 
+    // Tag size should be <= MAX_TAG_SIZE and stream length.
+    private boolean validateTagSize() {
+        long streamLength = getStreamLength(); // Can be -1 if unknown
+        if ((streamLength > 0 && tagSize > streamLength) ||
+                tagSize > MAX_TAG_SIZE) {
+            Logger.logMsg(Logger.ERROR, "Unexpected ID3 tag size("
+                    + tagSize +"). ID3 metadata will be ignored.");
+            return false;
+        }
+
+        return true;
+    }
+
+    // Frame size should be <= MAX_FRAME_SIZE and tag size.
+    private boolean validateFrameSize(int frameSize) {
+        if (frameSize > tagSize || frameSize > MAX_FRAME_SIZE) {
+            Logger.logMsg(Logger.ERROR, "Unexpected ID3 frame size("
+                    + frameSize +"). ID3 metadata will be ignored.");
+            return false;
+        }
+
+        return true;
+    }
+
     private int getFrameSize() throws IOException {
         if (version == 4) {
             byte[] buf = getBytes(4);
diff --git a/modules/javafx.media/src/main/native/gstreamer/plugins/dshowwrapper/dshowwrapper.cpp b/modules/javafx.media/src/main/native/gstreamer/plugins/dshowwrapper/dshowwrapper.cpp
index 431219b4ad8..8320cb9954b 100644
--- a/modules/javafx.media/src/main/native/gstreamer/plugins/dshowwrapper/dshowwrapper.cpp
+++ b/modules/javafx.media/src/main/native/gstreamer/plugins/dshowwrapper/dshowwrapper.cpp
@@ -59,6 +59,7 @@ using namespace std;
 #define AAC_PTS_INPUT_DEBUG 0
 #define EOS_DEBUG 0
 
+// MAX_HEADER_SIZE is valid max size for H.264 and AAC, however AAC header is actually smaller.
 #define MAX_HEADER_SIZE 256
 #define INPUT_BUFFERS_BEFORE_ERROR 500
 
@@ -635,17 +636,25 @@ void dshowwrapper_deliver_post_process_mp2t(GstBuffer *pBuffer, GstDShowWrapper
     data = info.data;
     size = info.size;
 
-    if (data == NULL || size < 3)
+    // PES header 6 bytes + optional extension + payload
+    // We should have at least 7 bytes (header + 1 byte for payload)
+    if (data == NULL || size < 7)
+    {
+        gst_buffer_unmap(pBuffer, &info);
         return;
+    }
 
     if (data[0] == 0x00 && data[1] == 0x00 && data[2] == 0x01) // PES header start
     {
-        if ((data[6] & 0x80) == 0x80) // Optional PES header
+        // Check for optional PES header and make sure we have enough bytes
+        // to continue parsing optional PES header which is 3 bytes.
+        if ((data[6] & 0x80) == 0x80 && size >= 9) // Optional PES header
         {
             __int64 PTS = 0;
             GstClockTime gst_pts = GST_CLOCK_TIME_NONE;
 
-            if ((data[7] & 0x80) == 0x80) // Get PTS
+            // Make sure we have enough bytes to read PTS
+            if ((data[7] & 0x80) == 0x80 && size >= 14) // Get PTS
             {
                 PTS |= ((__int64)(data[9] & 0x0E) << 29);
                 PTS |= (data[10] << 22);
@@ -694,11 +703,21 @@ void dshowwrapper_deliver_post_process_mp2t(GstBuffer *pBuffer, GstDShowWrapper
             }
 
             guint8 optional_remaining_header_size = data[8];
-            size -= (PES_HEADER_SIZE + PES_OPTIONAL_HEADER_SIZE + optional_remaining_header_size);
-            offset = (PES_HEADER_SIZE + PES_OPTIONAL_HEADER_SIZE + optional_remaining_header_size);
+            if ((PES_HEADER_SIZE + PES_OPTIONAL_HEADER_SIZE + optional_remaining_header_size) < size)
+            {
+                size -= (PES_HEADER_SIZE + PES_OPTIONAL_HEADER_SIZE + optional_remaining_header_size);
+                offset = (PES_HEADER_SIZE + PES_OPTIONAL_HEADER_SIZE + optional_remaining_header_size);
+            }
+            else
+            {
+                // Something wrong.
+                gst_buffer_unmap(pBuffer, &info);
+                return;
+            }
         }
         else
         {
+            // Skip 6 bytes of PES header
             size -= PES_HEADER_SIZE;
             offset = PES_HEADER_SIZE;
         }
@@ -1551,7 +1570,14 @@ static gboolean dshowwrapper_load_decoder_aac(GstStructure *s, GstDShowWrapper *
             codec_data = gst_value_get_buffer(v);
             if (codec_data != NULL)
                 if (gst_buffer_map(codec_data, &info, GST_MAP_READ))
-                    codec_data_size = info.size;
+                    codec_data_size = (gint)info.size;
+        }
+
+        // Make sure header has reasonable size
+        if (codec_data_size < 0 || codec_data_size > MAX_HEADER_SIZE)
+        {
+            gst_buffer_unmap(codec_data, &info);
+            return FALSE;
         }
 
         inputFormat.type = MEDIATYPE_Audio;
@@ -2071,13 +2097,14 @@ static gboolean dshowwrapper_load_decoder_h264(GstStructure *s, GstDShowWrapper
             if (gst_buffer_map(codec_data, &codec_data_info, GST_MAP_READ))
             {
                 if (codec_data_info.size <= MAX_HEADER_SIZE)
-                    header_size = dshowwrapper_get_avc_config(codec_data_info.data, codec_data_info.size, header, MAX_HEADER_SIZE, &decoder->lengthSizeMinusOne);
+                    header_size = (gint)dshowwrapper_get_avc_config(codec_data_info.data, codec_data_info.size, header, MAX_HEADER_SIZE, &decoder->lengthSizeMinusOne);
                 gst_buffer_unmap(codec_data, &codec_data_info);
             }
         }
         else
             return FALSE;
 
+        // dshowwrapper_get_avc_config() will make sure that (header_size <= MAX_HEADER_SIZE)
         if (header_size <= 0)
             return FALSE;