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HomeDocsClaude Code CLI 21 Oct 2026
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Scan your codebase for vulnerabilities changedclaude-security

Nearest release: v2.1.307, published an hour after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 21 Oct 2026 19:30 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 21 Oct 2026 19:37 UTC.

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55The Claude Security plugin runs a multi-agent vulnerability scan of your codebase inside a Claude Code session. A team of Claude agents maps your architecture, builds a threat model, hunts for vulnerabilities, and independently reviews every finding before writing the report. Use the plugin to scan a whole repository or [only a set of changes](#scan-only-your-changes), such as a branch's diff, a pull request's diff, or a single commit, then turn the findings you choose into patches that you review and apply yourself.
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7The plugin runs locally in your session, uses [whichever models you have access to in Claude Code](#models-and-providers), and each scan counts toward your [usage](/docs/en/costs). If you want a managed service that monitors your repositories, or want to run scans on [Claude Mythos](https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5-and-claude-mythos-5), see the [Claude Security](https://claude.com/product/claude-security) product, available on the Enterprise plan. The plugin reaches code the managed product can't reach, such as repositories hosted on GitLab or Bitbucket, or on networks that don't allow inbound connections.
7The plugin runs locally in your session, uses [whichever models you have access to in Claude Code](#models-and-providers), and each scan counts toward your [usage](/docs/en/costs). If you want a managed service that monitors your repositories, or want to run scans on [Claude Mythos](https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5-and-claude-mythos-5), see the [Claude Security](https://claude.com/product/claude-security) product, available on the Enterprise plan.
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99The plugin is also distinct from the review tools already in Claude Code: the [security guidance plugin](/docs/en/security-guidance) reviews code as Claude writes it, [`/security-review`](/docs/en/commands#all-commands) runs a single pass over your branch, and [Code Review](/docs/en/code-review) reviews pull requests. For how the layers stack, see [How the plugin fits with other security tools](#how-the-plugin-fits-with-other-security-tools).
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