Professional File Upload Security Testing Services

Upload Functions Tested

Had Upload Vulnerabilities

Security Report Delivery

Upload Vulnerabilities Found

Upload functions vulnerable to exploitation

Security breaches involve file upload

Missing proper file validation

Average upload-related breach cost

📋 File Type Validation Testing

File type validation testing examines file extension filtering, MIME type validation, and magic number verification preventing malicious file upload. We test file type validation through file extension validation testing examining whitelist effectiveness, file extension filtering bypass using double extension bypass, MIME type validation accuracy through content-type validation manipulation, and magic number verification implementation. Our file upload vulnerability testing identifies file type validation testing weaknesses including blacklist bypass, case sensitivity bypass, double extension bypass using multiple extensions like file.php.jpg, null byte injection for extension truncation, content-type validation spoofing, MIME type validation bypass, incomplete magic number verification, and file extension filtering gaps enabling attackers to upload executable upload files achieving webshell upload, arbitrary file upload, and file upload remote code execution through file type validation bypass and file upload filter bypass exploitation.

Testing Focus: Extension filtering, MIME validation, magic numbers, content-type, whitelist/blacklist, double extension, null byte.

📏 File Size Validation Testing

File size validation testing examines file size restrictions implementation preventing denial of service and storage exhaustion. We test file size validation testing validating maximum file size enforcement, minimum file size restrictions, total upload size limits, and file size restrictions implementation. Our file upload security testing identifies file size validation testing failures including missing file size restrictions, excessive size limits enabling storage exhaustion, insufficient validation on client-side only, file size bypass through chunked uploads, multipart form data manipulation, and bulk file upload security testing gaps enabling attackers to exhaust server storage, cause denial of service through massive uploads, bypass file size restrictions through request manipulation, and exploit file size validation testing weaknesses preventing proper upload functionality testing and file upload security assessment through inadequate file size restrictions implementation.

Testing Focus: Size limits, client-side bypass, chunked uploads, storage exhaustion, multipart manipulation, bulk uploads.

🔍 File Content Validation Testing

File content validation testing examines magic number verification, executable upload detection, and malicious file upload prevention testing. We test file content validation testing validating file header verification, magic number verification accuracy, file signature validation, and safe file handling. Our file upload vulnerability assessment identifies file content validation testing weaknesses including insufficient magic number verification, incomplete file signature checking, missing executable upload detection, inadequate malicious file upload testing, polyglot file detection gaps, and content validation bypass enabling attackers to upload webshell upload disguised as legitimate files, executable upload with valid headers, malicious PHP through image polyglots, and arbitrary file upload achieving file upload remote code execution through file content validation testing bypass and malicious file upload despite file type validation implementation.

Testing Focus: Magic numbers, file signatures, executable detection, polyglot files, header validation, content analysis.

🌐 Unrestricted File Upload Testing

Unrestricted file upload testing examines arbitrary file upload vulnerabilities enabling complete server compromise. We test unrestricted file upload vulnerability testing identifying missing file type validation, absent file content validation, inadequate file extension filtering, and upload functionality testing gaps. Our insecure file upload testing identifies unrestricted upload vulnerabilities including arbitrary file upload to web directories enabling direct access, executable upload with execution permissions, webshell upload achieving persistent access, file upload remote code execution through script execution, PHP/ASP/JSP upload enabling server-side code execution, and unrestricted file upload enabling attackers to upload any file type achieving complete server compromise through webshell upload and file upload remote code execution requiring proper file type validation testing, file content validation testing, upload directory security, and file permissions preventing arbitrary file upload and unrestricted upload exploitation.

Testing Focus: Arbitrary upload, webshell upload, executable scripts, PHP/ASP/JSP, direct access, RCE.

🔓 File Upload Filter Bypass Testing

File upload filter bypass testing examines file upload bypass techniques circumventing file type validation and file extension filtering. We test file upload filter bypass including double extension bypass using multiple extensions, null byte injection for filter truncation, content-type validation manipulation, MIME type validation bypass, case sensitivity bypass, alternative extensions, and polyglot techniques. Our file upload bypass testing identifies filter bypass vulnerabilities including double extension bypass through file.php.jpg, null byte injection using file.php%00.jpg, content-type validation spoofing, MIME type validation bypass through header manipulation, case sensitivity exploitation, whitelist bypass through alternative extensions, and file upload filter bypass enabling attackers to bypass file type validation testing, circumvent file extension filtering, evade file content validation, and achieve webshell upload and executable upload through file upload bypass testing exploitation.

Testing Focus: Double extension, null byte, content-type spoofing, MIME bypass, case sensitivity, alternative extensions.

📂 File Upload Path Traversal Testing

File upload path traversal testing examines path traversal and directory traversal vulnerabilities enabling file overwrite and file disclosure. We test file upload path traversal testing validating filename sanitization, path normalization, directory traversal prevention, and upload directory security. Our file upload vulnerability testing identifies path traversal vulnerabilities including directory traversal through ../ sequences, filename manipulation enabling file overwrite of critical files, path traversal to upload outside intended directory, file disclosure through predictable paths, arbitrary file write through path manipulation, and file upload path traversal enabling attackers to overwrite configuration files, modify application code, upload to web-accessible directories, replace system files, and achieve file upload remote code execution through path traversal and directory traversal exploitation requiring proper filename validation and upload directory security implementation.

Testing Focus: Directory traversal, path manipulation, file overwrite, filename sanitization, ../ sequences, arbitrary write.

🖼️ Image Upload Security Testing

Image upload security testing examines image processing vulnerabilities, metadata extraction risks, and EXIF data exposure. We test image upload security testing validating image processing security, EXIF data sanitization, metadata extraction handling, and safe file handling for images. Our file upload security assessment identifies image upload vulnerabilities including image processing bypass enabling polyglot uploads, EXIF data containing malicious payloads, metadata extraction revealing sensitive information through EXIF data, image processing library vulnerabilities, SVG upload enabling XSS, image resizing bypass, and avatar upload security testing gaps enabling attackers to embed malicious code in images, exploit image processing through malformed images, inject XSS through SVG upload, and achieve file upload remote code execution through image processing vulnerabilities requiring proper image upload security testing and EXIF data sanitization.

Testing Focus: Image processing, EXIF data, metadata, polyglot images, SVG upload, avatar upload, image libraries.

📄 Document Upload Security Testing

Document upload security testing examines document processing vulnerabilities and attachment upload security testing. We test document upload security testing validating PDF processing, Office document handling, macro detection, and attachment upload security. Our file upload vulnerability assessment identifies document upload vulnerabilities including malicious macro execution, PDF JavaScript exploitation, Office document processing bypass, XML external entity through document upload, formula injection through spreadsheets, attachment upload security gaps, and document upload security testing failures enabling attackers to execute macros achieving remote code execution, exploit PDF viewers, inject malicious formulas, achieve XXE through document processing, and compromise systems through document upload requiring proper document upload security testing, macro detection, and safe file handling for documents and attachments.

Testing Focus: PDF security, Office macros, XML entities, formula injection, document processing, attachments.

🔒 Upload Directory & Storage Security Testing

Upload directory security testing examines file storage security, file permissions, and secure file storage implementation. We test upload directory security validating storage location outside webroot, file permissions preventing execution, directory listing prevention, and file storage security. Our file upload security testing identifies upload directory security weaknesses including uploads stored in web-accessible directories enabling direct access, improper file permissions allowing script execution, directory listing exposure revealing uploaded files, predictable upload paths enabling file disclosure, missing .htaccess restrictions, executable permissions on upload directory, and file storage security gaps enabling attackers to directly access uploaded webshells, execute arbitrary code through improper file permissions, enumerate uploaded files, and achieve file upload remote code execution requiring proper upload directory security outside webroot and correct file permissions.

Testing Focus: Storage location, file permissions, directory listing, .htaccess, webroot access, execution prevention.

🦠 Malware & Virus Scanning Testing

Malicious file upload testing examines virus scanning, malware detection, and quarantine mechanisms implementation. We test malicious file upload prevention testing validating virus scanning integration, malware detection effectiveness, quarantine mechanisms, and safe file handling. Our file upload security audit identifies malicious file upload testing gaps including missing virus scanning, inadequate malware detection, absent quarantine mechanisms for suspicious files, insufficient malware signature updates, malware detection bypass techniques, and malicious file upload testing failures enabling attackers to distribute malware to users, host malicious payloads, bypass antivirus through obfuscation, and achieve widespread infection through malicious file upload requiring comprehensive virus scanning implementation, effective malware detection, proper quarantine mechanisms, and malicious file upload prevention testing validation ensuring complete file upload security assessment coverage.

Testing Focus: Virus scanning, malware detection, quarantine, antivirus integration, signature updates, malware distribution.

Upload Security Specialists

Our team specializes in file upload security testing with extensive file upload vulnerability testing expertise. They have performed 4,500+ comprehensive file upload security assessment projects identifying 26,000+ upload vulnerabilities. Our certified file upload penetration testing experts understand file type validation testing, file size validation testing, file content validation testing, unrestricted file upload testing, file upload bypass testing, file upload filter bypass, malicious file upload testing, and all insecure file upload testing vectors ensuring comprehensive file upload security audit and complete upload functionality testing coverage.

Manual + Automated Testing

We combine automated file upload security testing with expert manual file upload vulnerability testing ensuring comprehensive vulnerability coverage. Automated tools identify obvious file type validation issues while manual file upload penetration testing discovers complex file upload filter bypass techniques, double extension bypass, null byte injection, file upload path traversal, and malicious file upload vectors that automated scanners miss ensuring complete file upload vulnerability assessment, thorough insecure file upload testing, and comprehensive upload functionality testing across all file upload bypass testing vectors.

All Upload Types Tested

Our file upload security testing services cover image upload security testing with EXIF data validation, document upload security testing with macro detection, avatar upload security testing, attachment upload security testing, bulk file upload security testing, drag and drop upload security testing, AJAX file upload security testing, unrestricted file upload vulnerability testing, file upload MIME type testing, file upload magic number testing, file upload path traversal testing, and file upload remote code execution testing ensuring comprehensive file upload penetration testing coverage across all webshell upload, executable upload, arbitrary file upload, and malicious file upload attack vectors.

Upload Function Discovery

Surface Mapping:

• Upload endpoint identification for file upload security testing
• File type validation testing discovery
• Upload mechanism analysis for upload functionality testing
• Storage location mapping for upload directory security
• File permissions review for file storage security
• Validation bypass reconnaissance

Validation Testing

Security Controls:

• File type validation testing with file extension filtering
• File size validation testing with file size restrictions
• File content validation testing with magic number verification
• MIME type validation and content-type validation
• File upload MIME type testing comprehensive
• File upload magic number testing validation

Bypass Exploitation

Attack Testing:

• File upload filter bypass using double extension bypass
• Null byte injection for file upload bypass testing
• File upload path traversal testing for path traversal
• Unrestricted file upload testing for arbitrary file upload
• Webshell upload and executable upload attempts
• File upload remote code execution testing

Report & Remediation

Documentation:

• File upload security audit report with all findings
• File type validation testing recommendations
• Upload directory security guidance
• Malicious file upload prevention testing instructions
• File storage security best practices
• 60-day support and re-testing

Basic Upload Testing

Essential upload security

Small applications

• Basic file upload security testing
• File type validation testing review
• File size validation testing
• Upload functionality testing basics
• File upload security report
• 30-day support

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Professional Upload Testing

Comprehensive upload security

Most applications

• Complete file upload vulnerability assessment
• File type validation testing with bypass attempts
• File content validation testing comprehensive
• File upload filter bypass testing
• Unrestricted file upload testing
• File upload path traversal testing
• Image upload security testing with EXIF
• Document upload security testing
• Malicious file upload testing
• Upload directory security review
• Executive presentation
• 60-day support
• One free re-test

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Enterprise Upload Security

Complete upload penetration testing

Complex enterprise systems

• Complete file upload penetration testing coverage
• Advanced file upload filter bypass testing
• File upload remote code execution testing
• All file upload bypass testing techniques
• Image upload security testing advanced
• Document upload security testing complete
• Bulk file upload security testing
• AJAX file upload security testing
• Drag and drop upload security testing
• Complete malicious file upload prevention testing
• File storage security assessment
• Virus scanning integration testing
• Executive presentation with Q&A
• 90-day premium support
• Unlimited re-testing

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SafetyBis file upload security testing discovered critical unrestricted file upload testing vulnerabilities enabling webshell upload. Their file upload filter bypass testing found double extension bypass and null byte injection. The file upload remote code execution testing prevented server compromise. Professional file upload vulnerability assessment that saved our infrastructure!

Their image upload security testing identified EXIF data risks and polyglot uploads. The file upload path traversal testing found directory traversal enabling file overwrite. The document upload security testing validated macro detection. Best file upload penetration testing and comprehensive insecure file upload testing we’ve experienced!

Their malicious file upload testing validated virus scanning and malware detection. The file type validation testing found magic number verification gaps. Certified file upload security specialists understanding file extension filtering, MIME type validation, and upload directory security deeply. Highly recommend their file upload security audit services!

What is file upload security testing?

File upload security testing and file upload vulnerability testing examine insecure file upload testing weaknesses enabling malicious file upload. Professional file upload penetration testing evaluates file type validation testing through file extension filtering and MIME type validation and magic number verification, file size validation testing with file size restrictions, file content validation testing detecting executable upload and webshell upload, unrestricted file upload testing identifying arbitrary file upload, file upload bypass testing including file upload filter bypass through double extension bypass and null byte injection, file upload path traversal testing preventing path traversal and directory traversal, and upload functionality testing. Comprehensive file upload security assessment validates upload directory security, file storage security, file permissions, virus scanning, malware detection, and complete insecure file upload testing preventing webshell upload, executable upload, file upload remote code execution, and all malicious file upload through proper file upload security audit.

How much does file upload testing cost?

File upload testing cost varies based on upload complexity. Basic file upload security testing costs $2,500-3,500 for simple upload functions. Professional file upload vulnerability testing ranges $7,000-8,500 for comprehensive testing including file upload filter bypass, file upload path traversal testing, and malicious file upload testing. Enterprise file upload penetration testing costs $14,000-17,000 for complex applications with image upload security testing, document upload security testing, bulk file upload security testing, and complete file upload security assessment. Investment prevents upload-related breaches averaging $4.6 million making file upload vulnerability assessment extremely cost-effective.

What’s included in upload security reports?

Every file upload security audit includes comprehensive documentation covering file upload vulnerabilities through file upload vulnerability testing, unrestricted file upload testing findings, file upload filter bypass techniques including double extension bypass and null byte injection, file type validation testing issues with file extension filtering and MIME type validation and magic number verification, file upload path traversal testing results, upload directory security weaknesses, file storage security gaps, malicious file upload prevention testing recommendations, virus scanning and malware detection validation, and detailed malicious file upload prevention testing instructions ensuring development teams implement proper file type validation testing, file size validation testing, file content validation testing, upload directory security, file permissions, and complete file upload security testing preventing webshell upload, executable upload, arbitrary file upload, and file upload remote code execution.

4,500+ Apps

Upload testing expertise

Upload Certified

Security specialists

All Upload Types

Complete coverage

60-Day Support

Remediation help