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Security audit

Postproxy

Security checks across malware telemetry and agentic risk

Overview

This is a disclosed Postproxy helper for managing real social media accounts, with powerful posting, deletion, messaging, queue, and webhook features that are expected for its purpose.

Install only if you trust Postproxy with the connected social accounts and API key. Confirm the exact content, target profiles/placements, DM recipient, delete scope, queue impact, and webhook destination before acting; prefer drafts or pausing queues when unsure, and keep API keys and webhook secrets out of logs and chat output.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Tool MisuseTool Parameter Abuse, Chaining Abuse, Unsafe Defaults
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (4)

Vague Triggers

Medium
Confidence
92% confidence
Finding
The skill description is extremely broad and covers publishing, deletion, comments, DMs, analytics, and webhook management across many platforms. That makes accidental or overly eager activation more likely for common social-media requests, increasing the chance the agent selects a high-impact skill when a safer or narrower capability would suffice.

Missing User Warnings

Medium
Confidence
94% confidence
Finding
The documentation exposes a destructive delete operation for queues without warning that deletion may permanently remove the queue and disrupt or orphan scheduled posting behavior. In a skill that manages automated publishing across many social platforms, an agent or user following these instructions could unintentionally cause irreversible operational loss and missed content schedules.

Missing User Warnings

Medium
Confidence
91% confidence
Finding
The file notes that queues dynamically rearrange all posts when settings change, but the update instructions do not clearly warn users at the point of modification that changing timeslots, timezone, or pause state can reschedule existing posts automatically. In this skill context, silent reshuffling can alter publication timing across business social accounts, causing reputational, campaign, or compliance issues if content goes out at unintended times.

Tool Parameter Abuse

High
Category
Tool Misuse
Content
This skill publishes to, modifies, and deletes content on the user's real social media accounts, and can read/send private messages. Before any outward-facing or irreversible action, summarize exactly what will happen and get explicit user confirmation:

- **Publishing** (create post without `draft`, publish draft, comment, reply): content goes live publicly and immediately. State the exact text, media, and target profiles/placements first. Prefer creating a draft when intent is ambiguous.
- **Deleting**: deleting a post from the DB only (`DELETE /api/posts/{id}`) leaves it live on the platforms; `delete_on_platform=true` or `/delete_on_platform` removes it from the social networks **irreversibly**. Never delete on platform without the user explicitly confirming the post and scope.
- **Direct messages and private replies**: these are private communications with real people. Only read or send them when the user explicitly asks; don't quote DM contents into other posts, tools, or external services. Private replies bypass Meta's 24h window — confirm before initiating contact.
- **Placements**: when posting to Facebook without an explicit placement, the post goes to a **random connected page**; LinkedIn defaults to the personal profile. Always resolve and confirm the placement for placement networks.
- **Webhook secrets**: the `secret` returned when creating a webhook is a credential — never print it in output, log it, or commit it. Webhook payloads can contain private content (DMs, comments) and are sent to the configured URL — only register HTTPS endpoints the user controls and trusts.
Confidence
91% confidence
Finding
DELETE /api/posts/{id}`)

VirusTotal

65/65 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.