diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java
index 2466a0007..82dcc2bc5 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java
@@ -1,6 +1,7 @@
 package stirling.software.SPDF.controller.api.converters;
 
 import java.io.ByteArrayOutputStream;
+import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.net.URLConnection;
@@ -87,7 +88,7 @@ public class ConvertImgPDFController {
             // returns bytes for image
             boolean singleImage = "single".equals(singleOrMultiple);
             String filename =
-                    Filenames.toSimpleFileName(file.getOriginalFilename())
+                    Filenames.toSimpleFileName(new File(file.getOriginalFilename()).getName())
                             .replaceFirst("[.][^.]+$", "");
 
             result =
@@ -231,7 +232,7 @@ public class ConvertImgPDFController {
                 PdfUtils.imageToPdf(file, fitOption, autoRotate, colorType, pdfDocumentFactory);
         return WebResponseUtils.bytesToWebResponse(
                 bytes,
-                file[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_converted.pdf");
+                new File(file[0].getOriginalFilename()).getName().replaceFirst("[.][^.]+$", "") + "_converted.pdf");
     }
 
     private String getMediaType(String imageFormat) {
diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java
index 79140c571..e572432df 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/PrintFileController.java
@@ -7,6 +7,7 @@ import java.awt.print.Printable;
 import java.awt.print.PrinterException;
 import java.awt.print.PrinterJob;
 import java.io.IOException;
+import java.nio.file.Paths;
 import java.util.Arrays;
 
 import javax.imageio.ImageIO;
@@ -45,6 +46,10 @@ public class PrintFileController {
     public ResponseEntity<String> printFile(@ModelAttribute PrintFileRequest request)
             throws IOException {
         MultipartFile file = request.getFileInput();
+        String originalFilename = file.getOriginalFilename();
+        if (originalFilename != null && (originalFilename.contains("..") || Paths.get(originalFilename).isAbsolute())) {
+            throw new IOException("Invalid file path detected: " + originalFilename);
+        }
         String printerName = request.getPrinterName();
         String contentType = file.getContentType();
         try {
diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
index bdf27c519..a784b0f39 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
@@ -42,6 +42,7 @@ import stirling.software.common.service.CustomPDFDocumentFactory;
 import stirling.software.common.util.TempFile;
 import stirling.software.common.util.TempFileManager;
 import stirling.software.common.util.WebResponseUtils;
+import java.lang.IllegalArgumentException;
 
 @RestController
 @RequestMapping("/api/v1/misc")
@@ -62,9 +63,18 @@ public class StampController {
     public ResponseEntity<byte[]> addStamp(@ModelAttribute AddStampRequest request)
             throws IOException, Exception {
         MultipartFile pdfFile = request.getFileInput();
+        String pdfFileName = pdfFile.getOriginalFilename();
+        if (pdfFileName.contains("..") || pdfFileName.startsWith("/")) {
+            throw new IllegalArgumentException("Invalid PDF file path");
+        }
+        
         String stampType = request.getStampType();
         String stampText = request.getStampText();
         MultipartFile stampImage = request.getStampImage();
+        String stampImageName = stampImage.getOriginalFilename();
+        if (stampImageName.contains("..") || stampImageName.startsWith("/")) {
+            throw new IllegalArgumentException("Invalid stamp image file path");
+        }
         String alphabet = request.getAlphabet();
         float fontSize = request.getFontSize();
         float rotation = request.getRotation();
diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java
index 5c1fd5f4a..d79105c26 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java
@@ -108,7 +108,9 @@ public class PipelineProcessor {
             if (inputFileTypes == null) {
                 inputFileTypes = new ArrayList<String>(Arrays.asList("ALL"));
             }
-            // List outputFileTypes = apiDocService.getExtensionTypes(true, operation);
+            if (!operation.matches("^[a-zA-Z0-9_-]+$")) {
+                throw new IllegalArgumentException("Invalid operation value received.");
+            }
             String url = getBaseUrl() + operation;
             List<Resource> newOutputFiles = new ArrayList<>();
             if (!isMultiInputOperation) {
@@ -327,6 +329,10 @@ public class PipelineProcessor {
         }
         List<Resource> outputFiles = new ArrayList<>();
         for (File file : files) {
+            Path normalizedPath = Paths.get(file.getName()).normalize();
+            if (normalizedPath.startsWith("..")) {
+                throw new SecurityException("Potential path traversal attempt in file name: " + file.getName());
+            }
             Path path = Paths.get(file.getAbsolutePath());
             // debug statement
             log.info("Reading file: " + path);
diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
index 47a53a4f9..fd5a9b288 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
@@ -74,9 +74,19 @@ public class WatermarkController {
     public ResponseEntity<byte[]> addWatermark(@ModelAttribute AddWatermarkRequest request)
             throws IOException, Exception {
         MultipartFile pdfFile = request.getFileInput();
+        String pdfFileName = pdfFile.getOriginalFilename();
+        if (pdfFileName != null && (pdfFileName.contains("..") || pdfFileName.startsWith("/"))) {
+            throw new SecurityException("Invalid file path in pdfFile");
+        }
         String watermarkType = request.getWatermarkType();
         String watermarkText = request.getWatermarkText();
         MultipartFile watermarkImage = request.getWatermarkImage();
+        if (watermarkImage != null) {
+            String watermarkImageFileName = watermarkImage.getOriginalFilename();
+            if (watermarkImageFileName != null && (watermarkImageFileName.contains("..") || watermarkImageFileName.startsWith("/"))) {
+                throw new SecurityException("Invalid file path in watermarkImage");
+            }
+        }
         String alphabet = request.getAlphabet();
         float fontSize = request.getFontSize();
         float rotation = request.getRotation();