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Security audit

Bloomerang

Security checks for vulnerabilities and agentic risk

Overview

The Bloomerang actions are read-only, but setup needs review because it executes unverified downloads and may introduce additional persistent agent skills.

Review and approve CLI installation separately, using an inspected, pinned release. Confirm that OOMOL may handle your constituent data and grant only necessary account access. Upstream documents OO_SKILLS_SYNC_DISABLED=1 to prevent startup skill synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md). Only Markdown was bundled; remote installer and service behavior 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 chunk installs or bootstraps external software through remote shell execution, while the description promises Bloomerang data access. Nothing in the supplied code establishes that this installer is a supporting dependency for Bloomerang functionality. 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

Piping an HTTPS response directly into Bash executes mutable remote content without establishing a trusted version or verifying its integrity independently. If the distribution endpoint or release pipeline is compromised, a routine read-only Bloomerang task could trigger local code execution, potentially exposing files or credentials accessible to the process.

Content

Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.

First-time setup instructs immediate execution of downloaded installer scripts without a system-integrity warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The setup instructions execute remotely supplied shell or PowerShell code without a separate verification or approval step. Although installation is conditional on a missing CLI, compromise of the installer source could cause arbitrary code execution with the invoking user's privileges; this overlaps with SC2 rather than representing an independent exploit.

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 78)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