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Security audit

Publora Mastodon

Security checks for vulnerabilities and agentic risk

Overview

This is a small documentation-only skill for posting or scheduling Mastodon content through Publora, with the external API use clearly tied to that purpose.

Install this only if you intend to let the agent draft and send Mastodon posts through Publora. Keep the Publora API key private, verify the account/platform ID and final post content before publishing or scheduling, and only upload media files you intentionally select.

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 (9)

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 12)May include surrounding context.

md
Mastodon / Fediverse platform skill for the Publora API. For auth, core scheduling, media upload, and workspace/webhook docs, see the `publora` core skill.

**Base URL:** `https://api.publora.com/api/v1`  
**Header:** `x-publora-key: sk_YOUR_KEY`  
**Platform ID format:** `mastodon-{accountId}`

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 31)May include surrounding context.

md
Mastodon / Fediverse platform skill for the Publora API. For auth, core scheduling, media upload, and workspace/webhook docs, see the `publora` core skill.

**Base URL:** `https://api.publora.com/api/v1`  
**Header:** `x-publora-key: sk_YOUR_KEY`  
**Platform ID format:** `mastodon-{accountId}`

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 59)May include surrounding context.

md
Mastodon / Fediverse platform skill for the Publora API. For auth, core scheduling, media upload, and workspace/webhook docs, see the `publora` core skill.

**Base URL:** `https://api.publora.com/api/v1`  
**Header:** `x-publora-key: sk_YOUR_KEY`  
**Platform ID format:** `mastodon-{accountId}`

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 65)May include surrounding context.

md
Mastodon / Fediverse platform skill for the Publora API. For auth, core scheduling, media upload, and workspace/webhook docs, see the `publora` core skill.

**Base URL:** `https://api.publora.com/api/v1`  
**Header:** `x-publora-key: sk_YOUR_KEY`  
**Platform ID format:** `mastodon-{accountId}`

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 31)May include surrounding context.

Post a Toot (text)

javascript
await fetch('https://api.publora.com/api/v1/create-post', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', 'x-publora-key': 'sk_YOUR_KEY' },
  body: JSON.stringify({

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 59)May include surrounding context.

md
HEADERS = { 'Content-Type': 'application/json', 'x-publora-key': 'sk_YOUR_KEY' }

# Step 1: Create post
post = requests.post('https://api.publora.com/api/v1/create-post', headers=HEADERS, json={
    'content': 'Here is a photo from our event 📷 #community',
    'platforms': ['mastodon-123456789']
}).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 65)May include surrounding context.

md
HEADERS = { 'Content-Type': 'application/json', 'x-publora-key': 'sk_YOUR_KEY' }

# Step 1: Create post
post = requests.post('https://api.publora.com/api/v1/create-post', headers=HEADERS, json={
    'content': 'Here is a photo from our event 📷 #community',
    'platforms': ['mastodon-123456789']
}).json()

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 59)May include surrounding context.

md
HEADERS = { 'Content-Type': 'application/json', 'x-publora-key': 'sk_YOUR_KEY' }

# Step 1: Create post
post = requests.post('https://api.publora.com/api/v1/create-post', headers=HEADERS, json={
    'content': 'Here is a photo from our event 📷 #community',
    'platforms': ['mastodon-123456789']
}).json()

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 65)May include surrounding context.

md
}).json()

# Step 2: Get upload URL (up to 16 MB, JPEG/PNG/GIF/WebP)
upload = requests.post('https://api.publora.com/api/v1/get-upload-url', headers=HEADERS, json={
    'postGroupId': post['postGroupId'],
    'fileName': 'photo.jpg',
    'contentType': 'image/jpeg',

Static analysis

No suspicious patterns detected.