ClawHub
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Security audit

Excel Business Analysis Studio

Security checks for vulnerabilities and agentic risk

Overview

This skill coherently creates local spreadsheet reports, though users should select a reporting month and review excluded rows.

Supply an explicit YYYY-MM period for monthly reports and review Issues before relying on totals. Keep generated reports private because they retain transaction details. Use a dedicated virtual environment and reviewed installer/dependency versions for reproducibility.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
Findings (6)

MCP server referenced without pinned version: 'npx clawhub'.

Medium
Category
MCP Rug Pull
Confidence
93% confidence
Finding

The documented command uses npx clawhub@latest, which can download and execute a changing npm package version rather than a reviewed, fixed release. If a future release or its dependencies are compromised, installation could execute attacker-controlled code with the invoking user's permissions, potentially exposing workspace files, business spreadsheets, or credentials. This is an unpinned CLI supply-chain risk, not evidence of an MCP server or malicious intent; its presence in an optional installation example limits immediate exposure.

Content

No source excerpt is available for this finding.

MCP server referenced without pinned version: 'npx clawhub'.

Medium
Category
MCP Rug Pull
Confidence
93% confidence
Finding

The documented command uses npx clawhub@latest, which downloads and executes a mutable package version rather than a reviewed, fixed release. Although this is an installation CLI rather than an MCP server, a compromised future release could execute code with the installing user's permissions and potentially access workspace spreadsheets; the supplied file contains no evidence of malicious intent.

Content

No source excerpt is available for this finding.

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: env, file_read, file_write.

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

Reports aggregate all months together when the optional period is omitted, contrary to the manifest's monthly-report claim.

Medium
Category
Excessive Agency
Confidence
98% confidence
Finding

When period is omitted, totals are keyed only by currency and category, so records from multiple months are combined and presented as 'Current net' without a reporting interval. In a skill advertised as producing monthly financial reports, this is a report-integrity weakness that can mislead budgeting or reconciliation decisions; preserved source rows improve auditability but do not prevent misleading summaries.

Content

No source excerpt is available for this finding.

Scope Creep

Low
Category
Excessive Agency
Confidence
70% confidence
Finding

Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.

Content

Scanner excerpt · LICENSE (reported line 7)May include surrounding context.

text
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Unverifiable Dependency: openpyxl has 2 known advisory(ies) (CVE-2017-5992 (Improper Restriction of XML External Entity Reference in Openpyxl); CVE-2017-5992 (Openpyxl 2.4.1 resolves external entities by default, which allows remote attack)), but the manifest does not pin a version, so it is unknown whether the installed release is affected

Low
Category
Supply Chain
Confidence
40% confidence
Finding

OSV returned advisories for this package, but its resolved version is unknown. A package-name lookup does not establish whether the installed release is affected by those advisories.

Content

No source excerpt is available for this finding.