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Security audit

PagerDuty

Security checks for vulnerabilities and agentic risk

Overview

This PagerDuty skill needs review because its safety rules allow incident resolution without confirmation.

Before use, require confirmation for incident resolution and every other state-changing action, with an explicit allowlist for reads. Install the CLI through a reviewed, verified method and consider the access granted to OOMOL. The bundled instructions were fully reviewed, but the remote installer and live connector implementation were not verified.

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
Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The supplied code performs remote script execution rather than any visible PagerDuty operation. Nothing in the chunk establishes that this installer is a supporting PagerDuty dependency. The downloaded script's contents and resulting actions are not available for inspection.

Content

No source excerpt is available for this finding.

Incident resolution is incorrectly treated as a read operation that can run without confirmation.

High
Category
Output Handling
Confidence
99% confidence
Finding

Incident resolution is incorrectly covered by the instruction allowing untagged actions to run without confirmation. In an operational PagerDuty integration, unauthorized resolution can end active incident handling or suppress further escalation; this is the same underlying defect identified by SDI-4, not an additional independent vulnerability.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The setup command downloads a mutable remote script and immediately executes it without integrity verification or review; the PowerShell alternative has the same weakness. Although this is a legitimate dependency-installation context and runs only when the CLI is missing, compromise of the distribution endpoint could execute arbitrary code with the agent's local permissions.

Content

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

The state-changing resolve_incident action is untagged and therefore classified as a safe read by the safety instructions.

Medium
Category
Excessive Agency
Confidence
99% confidence
Finding

The resolve_incident action changes incident state but has no write or destructive tag, while the safety instructions explicitly classify untagged actions as reads that can run directly. This creates a confirmation bypass that could prematurely resolve an active incident and disrupt incident response.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 82)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources