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Security audit

PostLake schedule

Security checks for vulnerabilities and agentic risk

Overview

This skill clearly teaches an agent how to schedule and manage PostLake social posts, with external API access that matches its stated purpose.

Install only if you intend agents to manage PostLake scheduled posts with your API key. Review generated text, target profile or account, scheduled time, and any cancellation target before the agent sends POST, PATCH, or DELETE requests.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (6)

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 28)May include surrounding context.

future. Convert the user's local time to UTC before sending.

bash
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \

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 28)May include surrounding context.

future. Convert the user's local time to UTC before sending.

bash
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \

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 45)May include surrounding context.

future. Convert the user's local time to UTC before sending.

bash
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \

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 52)May include surrounding context.

future. Convert the user's local time to UTC before sending.

bash
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \

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 64)May include surrounding context.

future. Convert the user's local time to UTC before sending.

bash
curl -X POST https://api.postlake.dev/v1/posts \
 -H "Authorization: Bearer $POSTLAKE_API_KEY" \
 -H "Content-Type: application/json" \
 -H "Idempotency-Key: $(uuidgen)" \

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill documents destructive cancellation of scheduled posts without requiring or even recommending an explicit user confirmation step. In an agent setting, this increases the chance of accidental or unauthorized deletion of queued content, causing business disruption and loss of planned communications.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.