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Skill Scanner — agentic threat model

6.4AIVSS 6.4 · Medium

Skill Scanner is a security-focused static and semantic analysis tool integrated into CI/CD pipelines. Its primary risk lies in its potential bypass or manipulation as a security gate, which could allow malicious agent skills to infiltrate production environments or compromise the CI/CD runner.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 7.5AARS uplift 0.53Factor sum 2.1/10Threat ×1.0Mitigation ×0.8
Autonomy of Action
0.30
Goal-Driven Planning
0.20
Self-Modification
0.00
Dynamic Tool Use
0.20
Persistent Memory
0.10
Contextual Awareness
0.40
Dynamic Identity
0.10
Multi-Agent Interactions
0.10
Non-Determinism
0.40
Opacity & Reflexivity
0.30

Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.

MAESTRO 7-layer threat model

Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.

L1 · Foundation Models✓ mapped

Uses LLM-assisted semantic review to analyze skills. This introduces risks of adversarial evasion, where a malicious skill is crafted specifically to bypass the LLM's semantic detection rules.

L2 · Data Operations⚠ not certain from listing

Not certain from the listing — The tool processes local skill files, YAML, and code within a CI/CD workspace, but there is no mention of persistent databases, vector stores, or RAG operations.

L3 · Agent Frameworks✓ mapped

The scanner parses agent framework configurations (OpenAI Codex, Cursor Agent Skills). Vulnerabilities in the parsing logic of these framework-specific formats could lead to parser exploits or denial of service.

L4 · Deployment & Infrastructure✓ mapped

Designed for CI/CD environments (e.g., GitHub Actions). If the scanner is compromised or contains a remote code execution vulnerability, an attacker could escalate privileges to compromise the host runner or access repository secrets.

L5 · Evaluation & Observability✓ mapped

Acts as an evaluation and guardrail tool by outputting SARIF reports. The primary threat is detection blind spots or false negatives in the YARA/dataflow engines that allow malicious skills to pass undetected.

L6 · Security & Compliance (cross-cutting)✓ mapped

Enables automated security gating and compliance checks in software development lifecycles. However, the listing does not detail internal access controls or authentication mechanisms for the scanner itself.

L7 · Agent Ecosystem✓ mapped

Directly addresses ecosystem risks by scanning third-party agent skills before deployment, mitigating the risk of cascading failures or malicious actions from untrusted marketplace skills.

MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).

These scores are auto-generated from public information (the agent's own listing, docs, and repository) using the canonical OWASP AIVSS formula and the MAESTRO framework — an estimate for guidance, not a penetration test, audit, or certification. See the scoring methodology. Are you the vendor? Factual corrections are free.