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Security audit

Mendeley

Security checks for vulnerabilities and agentic risk

Overview

The Mendeley workflow is appropriately scoped, but setup can execute unverified downloaded software without a separate approval step.

Review setup before installing. Prefer a separately approved, verified CLI installation and check its automatic agent-skill synchronization settings. OOMOL mediates access to your connected Mendeley account. Library changes require confirmation, but the remote installer's contents and exact effects could not be verified.

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
97% confidence
Finding

The visible code's sole action is executing an Oomol-hosted installer. Nothing in the supplied chunk establishes this as a supporting dependency for Mendeley functionality. Its installation purpose and accessed resource therefore materially differ from the declaration. The remote script's contents and any additional effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

Piping a remote response directly into Bash executes mutable third-party code without checking its integrity or reviewing it; the PowerShell alternative has the same issue. If the distribution endpoint or release pipeline is compromised, the installer can run arbitrary code with the invoking user's permissions, potentially accessing local files and credentials. The legitimate OOMOL dependency and conditional setup reduce exposure frequency but do not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 61)May include surrounding context.

The fallback setup instructs execution of downloaded installation scripts without warning about the system-integrity implications.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The fallback directs the agent to execute downloaded installation scripts without explicitly seeking approval for local system changes or explaining the trust involved. Although installation is a legitimate prerequisite and only occurs when the CLI is missing, approval rules for Mendeley writes do not clearly cover this separate host-level operation.

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 82)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