Security Audit

Automattic/agent-skills:skills/wp-performance

github.com/Automattic/agent-skills

AI SkillCommit 48d4aa21d0da

CRITICAL

Scanned 6 days ago

Critical

Immediate action required

High

Priority fixes suggested

Medium

Best practices review

Low

Acknowledged / Tracked

Trust Assessment

Automattic/agent-skills:skills/wp-performance received a trust score of 35/100, placing it in the Untrusted category. This skill has significant security findings that require attention before use in production.

SkillShield's automated analysis identified 3 findings: 2 critical, 0 high, 1 medium, and 0 low severity. Key findings include Persistence / self-modification instructions, Path Traversal in file existence checks.

The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. The Manifest Analysis layer scored lowest at 40/100, indicating areas for improvement.

Last analyzed on April 1, 2026 (commit 48d4aa21). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.

Layer Breakdown

Manifest Analysis

40%

Static Code Analysis

100%

Dependency Graph

100%

LLM Behavioral Safety

93%

Behavioral Risk Signals

Filesystem Write

3 findings

Shell Execution

2 findings

Security Findings3

Severity	Finding	Layer	Location
CRITICAL	Persistence / self-modification instructions Shell RC file modification for persistence Remove any persistence mechanisms. Skills should not modify system startup configurations, crontabs, LaunchAgents, systemd services, or shell profiles.	Manifest	skills/wp-performance/scripts/perf_inspect.mjs:100
CRITICAL	Persistence / self-modification instructions Shell RC file modification for persistence Remove any persistence mechanisms. Skills should not modify system startup configurations, crontabs, LaunchAgents, systemd services, or shell profiles.	Manifest	skills/wp-performance/scripts/perf_inspect.mjs:122
MEDIUM	Path Traversal in file existence checks The script constructs file paths using the user-provided `--path` argument without sufficient sanitization. This path is then used with `fs.statSync` to check for file existence. An attacker can supply path traversal sequences (e.g., `../../`) in the `--path` argument to check for the existence of arbitrary files or directories outside the intended WordPress installation, leading to information disclosure about the file system structure or presence of sensitive files. Sanitize the `opts.path` argument to ensure it represents a canonical path within the expected WordPress installation directory. This can be done by resolving the path and verifying that it remains within a designated safe base directory, or by strictly validating that it does not contain path traversal sequences like `..`.	LLM	scripts/perf_inspect.mjs:100

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