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Security audit

Higgsfield AI

Security checks for vulnerabilities and agentic risk

Overview

Higgsfield actions require appropriate approval, but the CLI setup can introduce persistent changes to other agent skills without clearly explaining them.

Review the CLI's installation and automatic skill synchronization before enabling this integration. Prefer a reviewed CLI release and disable startup synchronization with OO_SKILLS_SYNC_DISABLED=1 for oo invocations if broader agent-skill changes are unwanted. OOMOL mediates your connected account and generation requests may consume credit. The remote installers and hosted service implementation 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 code runs a remote Oomol installer rather than performing Higgsfield AI operations. Nothing in the supplied content establishes that this installation is a supporting dependency for the declared purpose. The downloaded script's further behavior is not visible and cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

Piping an HTTPS response directly into bash executes mutable remote code without verifying a pinned version, signature, or digest. The OOMOL domain is consistent with the declared dependency, but compromise of its hosting or release pipeline could still yield arbitrary code execution on the user's host; this is the same underlying installation risk identified by SQP-2.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

Fallback setup instructs execution of downloaded installation scripts without a warning about system changes or remote-code execution.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs the agent to execute downloaded shell or PowerShell code without an explicit installation approval step or an integrity check. Although limited to a missing CLI, installation can change the host and execute arbitrary code with the invoking user's privileges; a compromised installer could access local files and credentials.

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 79)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