Add watermark to PDF

• Outcome: Pass
• Latest audit: May 28, 2026 at 9:44 AM UTC
• Version:
  1.0.0

Overview

The skill does what it claims: it uploads selected PDFs and watermark text to a disclosed third-party API to create watermarked files.

Install only if you are comfortable sending the selected PDFs, filenames, watermark text, and API-authenticated requests to Cross-Service-Solutions. Avoid confidential or regulated PDFs unless that service is approved for your use, keep the API key secret and revocable, and do not set SOLUTIONS_BASE_URL or --base-url unless you intentionally trust that destination.

SkillSpector

By NVIDIA

Vulnerability Patterns

• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code
• Excessive Agency: Unrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (5)

Missing User Warnings

Medium

• Confidence: 95% confidence
• Finding: The README describes uploading PDFs and watermark text to an external Solutions API but does not clearly warn users that their documents and text content are transmitted to a third-party service. This is a real transparency and data-handling issue because users may unknowingly send sensitive or regulated documents off-platform.

Missing User Warnings

Medium

• Confidence: 96% confidence
• Finding: The skill sends user-provided PDF files and watermark text to a third-party API, but the user-facing description does not prominently warn about this external transmission. That creates a privacy and data-handling risk because users may provide sensitive documents or confidential watermark text without informed consent.

Missing User Warnings

Medium

• Confidence: 95% confidence
• Finding: The script uploads local PDF contents and user-supplied watermark text to a third-party remote API, but it provides no explicit user-facing consent prompt or warning at execution time about external data transfer. Because PDFs often contain sensitive business or personal information, this can lead to unintended disclosure when users assume processing is local.

External Transmission

Medium

• Category: Data Exfiltration

Content

## How it works
1) Upload PDFs + watermark text to:
   `POST https://api.xss-cross-service-solutions.com/solutions/solutions/api/61`
2) Poll:
   `GET  https://api.xss-cross-service-solutions.com/solutions/solutions/api/<job_id>`
3) Return `output.files[].path` as download URL(s)

• Confidence: 90% confidence
• Finding: https://api.xss-cross-service-solutions.com/

External Transmission

Medium

• Category: Data Exfiltration

Content

1) Upload PDFs + watermark text to:
   `POST https://api.xss-cross-service-solutions.com/solutions/solutions/api/61`
2) Poll:
   `GET  https://api.xss-cross-service-solutions.com/solutions/solutions/api/<job_id>`
3) Return `output.files[].path` as download URL(s)

## Script (CLI)

• Confidence: 88% confidence
• Finding: https://api.xss-cross-service-solutions.com/

VirusTotal

66/66 vendors flagged this skill as clean.