pantheon-ai/github-actions-validator
Comprehensive toolkit for validating, linting, and testing GitHub Actions workflow files, custom local actions, and public actions. Use this skill when working with GitHub Actions YAML files (.github/workflows/*.yml), validating workflow syntax, testing workflow execution with act, or debugging workflow issues.
74
93%
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Low
Low-risk findings worth noting
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
The SKILL.md "CRITICAL: Assistant Workflow" Step 4 explicitly directs the assistant to perform web searches and read public action documentation for unknown public actions (e.g., "Use web search" to verify action inputs/versions), which requires fetching and interpreting untrusted third‑party web pages that can materially influence validation and subsequent actions.
Where we found it
web search (untrusted third-party web pages)
domain · 3 sites
The SKILL.md explicitly instructs the assistant to perform web searches for unknown public actions, requiring fetching and interpreting untrusted third-party web pages that can materially influence validation and subsequent actions.
SKILL.md
45
2. **Use web search** for unknown actions: `"[action-name] [version] github action documentation"`
SKILL.md
130
1. Use web search to find action documentation
SKILL.md
284
5. **Search**: Use web search to verify unknown actions
W012: Unverifiable external dependency detected (runtime URL that controls agent).
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
The install script (scripts/install_tools.sh) fetches and executes remote installers at runtime via "curl ... https://raw.githubusercontent.com/nektos/act/master/install.sh | bash" and "bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)", which runs remote code and is required for the skill to function.
Where we found it
nektos/act install.sh
dependency · 2 sites
The install script fetches and executes the nektos/act installer from raw.githubusercontent.com at runtime via curl | bash, running remote code required for the skill to function.
scripts/install_tools.sh
49
curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/nektos/act/master/install.sh | bash -s -- -b "${TOOLS_DIR}"
references/act_usage.md
9
curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/nektos/act/master/install.sh | bash
rhysd/actionlint download-actionlint.bash
dependency · 3 sites
The install script fetches and executes the actionlint installer from raw.githubusercontent.com at runtime via bash <(curl ...), running remote code required for the skill to function.
scripts/install_tools.sh
80
bash <(curl https://raw.githubusercontent.[REDACTED].bash)
references/actionlint_usage.md
9
bash <(curl https://raw.githubusercontent.[REDACTED].bash)
256
run: bash <(curl https://raw.githubusercontent.[REDACTED].bash)
- Audited
- Security analysis