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Security Policy

Reporting a Vulnerability

This plugin injects text into shell commands executed by OpenCode. While the attack surface is small, we take any security concern seriously.

Please do not open a public issue for security vulnerabilities.

Instead, report them privately via GitHub's Security Advisory system:

  1. Go to Security Advisories
  2. Click "Report a vulnerability"
  3. Describe the issue in detail — include steps to reproduce if possible

You can also email yikun.chen@163.com with "SECURITY" in the subject line.

What to Expect

  • Acknowledgment: within 48 hours
  • Status update: within 5 business days
  • Resolution timeline: depends on severity — critical issues prioritized for same-week fix

We follow coordinated disclosure and will credit reporters (unless you prefer to remain anonymous).

Supported Versions

Only the latest released version receives security updates.

Version Supported
2.x ✅
1.x ❌

Security Considerations

This plugin operates at the shell-command level inside OpenCode:

  • Command injection: The plugin prepends encoding configuration to shell commands. It checks for existing OutputEncoding tokens to avoid duplication and preserves set prefix order, but does not modify the user's original command content.
  • No network access: The plugin has zero npm runtime dependencies and makes no network calls.
  • Debug logging: When OPENCODE_UTF8_DEBUG=1 is set, command contents are written to $TMP/utf8-plugin.log. Keep this disabled in sensitive environments.

If you discover that a specially crafted command can bypass the encoding injection in a way that causes unintended behavior, please report it.