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Security audit

Gainsight NXT

Security checks for vulnerabilities and agentic risk

Overview

The Gainsight operations have clear approval controls, but setup can execute changing remote code and introduce broader agent changes without separate approval.

Review setup before installing: verify a specific CLI release and review or disable its automatic installation of other agent skills. Connect a suitably restricted Gainsight account and retain the required approval for every write or deletion. The bundled instructions were fully inspected; remote installer and hosted connector implementations 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
95% confidence
Finding

The supplied chunk installs software from cli.oomol.com rather than performing Gainsight NXT data operations. Dependency installation can be a supporting implementation detail, but this chunk provides no evidence linking the installer to the declared Gainsight functionality. The downloaded script's contents and additional effects cannot be determined from the supplied code.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command immediately executes a mutable script downloaded from an external server without version pinning or independent integrity verification. Compromise of the distribution endpoint could execute arbitrary code with the invoking user's permissions; HTTPS protects transport but does not establish that the script is trustworthy. The PowerShell installation example has the same weakness.

Content

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

The setup workflow executes downloaded installation scripts without warning the user about local system changes.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The fallback directs the agent to install software when the CLI is missing without explicitly obtaining permission for local system changes. Although installation supports the legitimate connector workflow and only occurs conditionally, a request to operate on Gainsight records does not necessarily authorize installing and executing software on the host.

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