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Security audit

kling-4-keyframe-film

Security checks for vulnerabilities and agentic risk

Overview

This skill coherently supports filmmaking through disclosed paid generation services and local video editing.

Use references you have permission to share with Varg and its model providers, and avoid sensitive photos or URLs carrying reusable credentials. Agree on a total budget, including retries, before generating.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (5)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 20)May include surrounding context.

md
openclaw:
    requires:
      anyBins:
        - curl
    homepage: https://varg.ai/how-to
compatibility: >-
  Needs a VARG_API_KEY with curl (see the varg-ai skill) or the varg MCP connection

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 32)May include surrounding context.

md
Kling 4 animates well and badly frames shots it invents. So the image model does the cinematography and Kling 4 does the acting, motion, voices and the in-between. This is how fal's Kling 4 Halloween music video was made ([YouTube, 2026-10-30](https://www.youtube.com/watch?v=WzXKggH-0Io%29%29%3A about 18 key stills on GPT Image 2.5, mostly 30-second Kling 4 takes at 1080p 21:9, then an edit that kept the best seconds of each. Prompt rules and the failure table live in `kling-4-prompting`.

Generation runs on varg: REST `https://api.varg.ai/v2` (the `varg-ai` skill) or the MCP server `https://mcp.varg.ai/mcp`. Price every take first (`POST /v2/estimate` or `estimate_cost` with `"model": "kling_v4"`).

## 1. Ask, then go

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 61)May include surrounding context.

text

```bash
curl -s -X POST https://api.varg.ai/v2/tools/image/call -H "Authorization: Bearer $VARG_API_KEY" \
  -H "Content-Type: application/json" -d '{"model":"gpt_image_2_5","prompt":"<still prompt>",
  "files":[{"url":"CAST_1"},{"url":"CAST_2"},{"url":"PROP"},{"url":"LOOK"}],"aspect_ratio":"21:9"}'

The workflow sends character photos and other reference images to external generation services without a privacy warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The workflow directs the agent to submit character-photo URLs and other references to an external image-generation service without a privacy notice or a check that sharing identifiable people’s images is authorized. External processing is expected for this task, which reduces suspicion of malicious intent, but sensitive images or access-bearing URLs could still be disclosed without informed approval.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 75)May include surrounding context.

Pin the reference route (with plain kling_v4, two files become start and end frame and a third is not used):

bash
curl -s -X POST https://api.varg.ai/v2/tools/video/call -H "Authorization: Bearer $VARG_API_KEY" \
  -H "Content-Type: application/json" -d '{
  "model": "fal:fal-ai/kling-video/v4/reference-to-video",
  "prompt": "<beat prompt>",

Static analysis

No suspicious patterns detected.