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Security audit

Aircall

Security checks for vulnerabilities and agentic risk

Overview

The Aircall features fit the stated purpose, but setup tells the agent to execute unverified online installers without a clear approval step.

Review and install the CLI separately using a verified release before allowing this skill to run. Review its automatic skill synchronization, and connect only the Aircall account you intend to expose through OOMOL. The remote installers could not be inspected, so their exact effects remain uncertain.

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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

The supplied chunk performs remote installer execution rather than Aircall data access. Dependency installation can be a supporting implementation detail, but nothing supplied establishes this installer as an Aircall dependency. Its downstream behavior cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS download directly into Bash executes mutable remote content without a pinned version or independent integrity verification. Compromise of the installer host or distribution pipeline could therefore lead to arbitrary code execution and access to locally accessible data and credentials. The expected vendor domain and legitimate setup purpose reduce suspicion of malicious intent, but do not eliminate this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 64)May include surrounding context.

Fallback setup executes remotely downloaded installation scripts without a user warning or approval step.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

When the CLI is missing, the skill instructs the agent to execute remotely supplied installation code without a separate approval or verification step. This expands an Aircall data-reading request into local software installation, and a compromised installer could execute arbitrary commands with the invoking user's permissions. The fallback condition reduces exposure but does not establish authorization for installation.

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 85)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