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Security audit

Bolna

Security checks for vulnerabilities and agentic risk

Overview

The Bolna read actions fit the stated purpose, but setup can execute unverified remote software without a clear user approval step.

Review the setup before installing. Install a verified CLI release yourself, require approval for installation changes, and review or disable its automatic skill synchronization. Connecting Bolna lets the agent retrieve workspace information and execution logs through OOMOL. No malicious behavior was established, but the remote installer's exact contents remain unverified.

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
99% confidence
Finding

The supplied command installs software by executing remote code rather than searching or reading Bolna data. No connection is shown that would establish this installer as a supporting implementation detail for the declared purpose. The downloaded script's contents and further effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes a mutable remote script directly into Bash without pinning or independently verifying its contents; the PowerShell alternative uses the same execution pattern. A compromised distribution endpoint could therefore execute arbitrary code with the invoking process's permissions, although the file provides no evidence that the endpoint is currently malicious.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

Fallback setup executes a remotely downloaded installer without warning the user about remote code execution or system changes.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

On a missing-CLI error, the skill directs installation through downloaded code without first explaining the system changes or obtaining explicit approval. This expands a read-only Bolna request into local code execution with the agent's operating-system permissions; the conditional trigger reduces exposure but does not authorize that expansion.

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 81)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