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Security audit

铁锈老物件翻新修复视频

Security checks for vulnerabilities and agentic risk

Overview

This skill is mostly coherent, but needs review because its helper script can upload any readable local file path to WeryAI when used as an image input.

Review this skill before installing. Use public HTTPS image URLs when possible. If local images are allowed, run it in a limited workspace or container and only pass exact files you intend to make available to WeryAI; do not let untrusted prompts choose image paths. Keep WERYAI_API_KEY scoped and private, and expect WeryAI credits to be consumed after confirmed generation runs.

Vulnerability Patterns
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (1)

T09 · Insecure Skill Coding Practices

Warning
Location
scripts/video_gen.js:206
Finding

Unrestricted Local File Read and Upload Through Image Parameters

Content
View full analysis
controller.abort(), 60_000); let res; try { res = await fetch(MODELS_BASE_URL + UPLOAD_API_PATH, { method: 'POST', headers: { Authorization: `Bearer ${apiKey}`, }, body: form, signal: controller.signal, }); } catch (err) { clearTimeout(timer); if (err.name === 'AbortError') { throw new Error(`Upload timeout: ${filePath}`); } throw err; } clearTimeout(timer); let data; try { data = await res.json(); } catch { throw new Error(`Upload failed with non-JSON response (HTTP ${res.status}).`); } const wrapped = { httpStatus: res.status, ...data }; if (!isApiSuccess(wrapped)) { const apiErr = formatApiError(wrapped); throw new Error(apiErr.errorMessage || `Upload failed (HTTP ${res.status}).`); ...[truncated 3834 chars]
Remediation
View remediation
Vulnerability Patterns
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (19)

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 16)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 21)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 22)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 28)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 29)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 30)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 35)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

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

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 67)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 68)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 69)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 114)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 137)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 143)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 176)May include surrounding context.

md
**Dependencies:** `WERYAI_API_KEY` + Node.js 18+. When you run the CLI, **`scripts/video_gen.js`** must exist; **[`WERYAI_VIDEO_API.md`](resources/WERYAI_VIDEO_

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 83)May include surrounding context.

md
- Do not hard-code absolute paths in this doc; run from the skill package root (next to `SKILL.md`) so `scripts/` and `resources/` paths resolve.

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
93% confidence
Finding

The skill explicitly requires network access and an environment secret (WERYAI_API_KEY) and instructs the user to run a Node script, but it does not declare an explicit tool scope such as permissions or allowed-tools. That creates an authorization ambiguity where an execution environment may grant broader capabilities than intended, increasing the chance of unreviewed outbound requests or unintended secret exposure if the referenced script behaves unexpectedly.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The documentation explicitly expands the skill from remote-URL video generation into reading a caller-supplied local path from disk and uploading it to a third-party endpoint. In an agent setting, that creates a data-exfiltration primitive: a prompt or workflow could cause the agent to access unintended local files and transmit them externally, especially if path validation and explicit per-file user consent are not strongly enforced.

Content

No source excerpt is available for this finding.

Context-Inappropriate Capability

Low
Category
Not specified by scanner
Confidence
76% confidence
Finding

The skill’s purpose is to generate satisfying rust restoration videos. The UX guidance goes beyond that purpose by telling agents to surface internal tracking identifiers like taskId and batchId to users for logging and support correlation, a capability not obviously required for end-user video generation itself.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.