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Security audit

WaiverForever

Security checks for vulnerabilities and agentic risk

Overview

The WaiverForever integration fits its description, but automatic setup runs downloaded code and leaves broader agent changes insufficiently disclosed.

Review and install the CLI separately before enabling this skill, including any automatic changes to other agent skills. Trusting OOMOL is part of this integration because it handles connected credentials and waiver operations. Keep the exact-payload approval requirement for writes. The remote installer payloads were unavailable for verification; no malicious behavior was established.

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
96% confidence
Finding

The supplied code executes an Oomol installer rather than performing WaiverForever data operations. Although dependency installation can be a supporting implementation detail, the supplied content establishes no relationship between this installer and WaiverForever. The remote script's contents are not provided, so its subsequent behavior cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable remote script directly into bash executes its contents without prior inspection or independent integrity verification; the adjacent PowerShell command has the same weakness. Compromise of the installer delivery infrastructure could yield arbitrary code execution with the invoking user's permissions, although the expected vendor domain and missing-CLI prerequisite reduce exposure and do not indicate malicious intent.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

The setup workflow executes remotely downloaded installation scripts without warning the user about the trust and system-modification implications.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The fallback setup instructs the agent to execute downloaded shell or PowerShell code without first explaining its system-level effects or obtaining installation approval. Although limited to first-time setup, this can turn authorization for a WaiverForever task into unreviewed execution of software with the invoking user's permissions.

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 83)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