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security-fix

Orchestrates test-driven fixes for Mattermost security tickets (Jira/Atlassian) with a Staff Security Engineer mindset: failing secure-behavior tests first, then implementation, then security review and edge-case loops, then opening a non-draft PR that follows `.github/PULL_REQUEST_TEMPLATE.md` when present, with a vague public description (no exploit detail). Use when the user invokes /security-fix:security-fix with a mattermost.atlassian.net browse URL, MM-* security work, backend permission or authorization bugs, or asks for this security TDD workflow.

67

Quality

81%

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Security

1 medium severity finding. This skill can be installed but you should review these findings before use.

Medium

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

Potentially malicious external URL detected (high risk: 0.90). The skill explicitly resolves and fetches Jira issue content at runtime (e.g., https://mattermost.atlassian.net/browse/MM-68140 via Atlassian MCP) and uses the ticket title/description/acceptance criteria/suggested remediation to populate agent prompts, so external content directly controls agent instructions.

Report incorrect finding
Repository
mattermost/mattermost-ai-marketplace
Audited
Security analysis
Snyk

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