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Security audit

uspeedo-email-sending-channel

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed uSpeedo email-sending helper that requires user confirmation and credential handling, with no evidence of hidden execution or persistence.

Install only if you intend to send email through uSpeedo. Use environment variables or a secure secret mechanism for ACCESSKEY_ID and ACCESSKEY_SECRET, avoid pasting long-lived keys into chat, review the sender, recipients, subject, and body before confirming, and avoid sensitive or unsafe HTML content.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (10)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · SKILL.md (reported line 73)May include surrounding context.

md
## Prerequisites

1. **Registration**: The user has registered an account at [uSpeedo](https://uspeedo.com?ChannelCode=OpenClaw).
2. **Obtain keys (environment variables)**: Get API keys from [Email API Key management](https://console.uspeedo.com/email/setting?type=apiKeys&ChannelCode=OpenClaw) and set them as `ACCESSKEY_ID` and `ACCESSKEY_SECRET` (e.g. in `.env`).

Before calling the send API, confirm with the user that these steps are done; if not, direct them to register and obtain keys at the link above.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The 'When to Use' section says the skill applies when the user asks to 'send email' or 'send an email'. These are very general phrases that can occur in many contexts, and the file does not provide negative examples or tighter activation constraints to reduce accidental invocation.

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 95)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 123)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 164)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 207)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 232)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 242)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 274)May include surrounding context.

md
**When to call**: After credentials are available and **before** `SendEmail`, unless the user has already given a definitive `SendEmail` for this send (then you may skip the list call).

**Endpoint**: `GET https://api.uspeedo.com/api/v1/email/GetSenderList`

**Headers**:
- `Accept: application/json`

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 207)May include surrounding context.

md
}

  const auth = Buffer.from(`${accessKeyId}:${accessKeySecret}`).toString('base64');
  const res = await fetch('https://api.uspeedo.com/api/v1/email/SendEmail', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',

Static analysis

No suspicious patterns detected.