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<header class="title">
<h1 id="npm-audit">npm-audit</h1>
<span class="description">Run a security audit</span>
</header>

<section id="table_of_contents">
<h2 id="table-of-contents">Table of contents</h2>
<div id="_table_of_contents"><ul><li><a href="#synopsis">Synopsis</a></li><li><a href="#description">Description</a></li><li><a href="#audit-endpoints">Audit Endpoints</a></li><ul><li><a href="#bulk-advisory-endpoint">Bulk Advisory Endpoint</a></li><li><a href="#quick-audit-endpoint">Quick Audit Endpoint</a></li><li><a href="#scrubbing">Scrubbing</a></li><li><a href="#calculating-meta-vulnerabilities-and-remediations">Calculating Meta-Vulnerabilities and Remediations</a></li></ul><li><a href="#exit-code">Exit Code</a></li><li><a href="#examples">Examples</a></li><li><a href="#configuration">Configuration</a></li><ul><li><a href="#audit-level"><code>audit-level</code></a></li><li><a href="#dry-run"><code>dry-run</code></a></li><li><a href="#force"><code>force</code></a></li><li><a href="#json"><code>json</code></a></li><li><a href="#package-lock-only"><code>package-lock-only</code></a></li><li><a href="#omit"><code>omit</code></a></li><li><a href="#workspace"><code>workspace</code></a></li><li><a href="#workspaces"><code>workspaces</code></a></li><li><a href="#include-workspace-root"><code>include-workspace-root</code></a></li></ul><li><a href="#see-also">See Also</a></li></ul></div>
</section>

<div id="_content"><h3 id="synopsis">Synopsis</h3>
<pre lang="bash"><code>npm audit [--json] [--production] [--audit-level=(low|moderate|high|critical)]
npm audit fix [--force|--package-lock-only|--dry-run|--production|--only=(dev|prod)]

common options: [--production] [--only=(dev|prod)]
</code></pre>
<h3 id="description">Description</h3>
<p>The audit command submits a description of the dependencies configured in
your project to your default registry and asks for a report of known
vulnerabilities.  If any vulnerabilities are found, then the impact and
appropriate remediation will be calculated.  If the <code>fix</code> argument is
provided, then remediations will be applied to the package tree.</p>
<p>The command will exit with a 0 exit code if no vulnerabilities were found.</p>
<p>Note that some vulnerabilities cannot be fixed automatically and will
require manual intervention or review.  Also note that since <code>npm audit fix</code> runs a full-fledged <code>npm install</code> under the hood, all configs that
apply to the installer will also apply to <code>npm install</code> – so things like
<code>npm audit fix --package-lock-only</code> will work as expected.</p>
<p>By default, the audit command will exit with a non-zero code if any
vulnerability is found. It may be useful in CI environments to include the
<code>--audit-level</code> parameter to specify the minimum vulnerability level that
will cause the command to fail. This option does not filter the report
output, it simply changes the command’s failure threshold.</p>
<h3 id="audit-endpoints">Audit Endpoints</h3>
<p>There are two audit endpoints that npm may use to fetch vulnerability
information: the <code>Bulk Advisory</code> endpoint and the <code>Quick Audit</code> endpoint.</p>
<h4 id="bulk-advisory-endpoint">Bulk Advisory Endpoint</h4>
<p>As of version 7, npm uses the much faster <code>Bulk Advisory</code> endpoint to
optimize the speed of calculating audit results.</p>
<p>npm will generate a JSON payload with the name and list of versions of each
package in the tree, and POST it to the default configured registry at
the path <code>/-/npm/v1/security/advisories/bulk</code>.</p>
<p>Any packages in the tree that do not have a <code>version</code> field in their
package.json file will be ignored.  If any <code>--omit</code> options are specified
(either via the <code>--omit</code> config, or one of the shorthands such as
<code>--production</code>, <code>--only=dev</code>, and so on), then packages will be omitted
from the submitted payload as appropriate.</p>
<p>If the registry responds with an error, or with an invalid response, then
npm will attempt to load advisory data from the <code>Quick Audit</code> endpoint.</p>
<p>The expected result will contain a set of advisory objects for each
dependency that matches the advisory range.  Each advisory object contains
a <code>name</code>, <code>url</code>, <code>id</code>, <code>severity</code>, <code>vulnerable_versions</code>, and <code>title</code>.</p>
<p>npm then uses these advisory objects to calculate vulnerabilities and
meta-vulnerabilities of the dependencies within the tree.</p>
<h4 id="quick-audit-endpoint">Quick Audit Endpoint</h4>
<p>If the <code>Bulk Advisory</code> endpoint returns an error, or invalid data, npm will
attempt to load advisory data from the <code>Quick Audit</code> endpoint, which is
considerably slower in most cases.</p>
<p>The full package tree as found in <code>package-lock.json</code> is submitted, along
with the following pieces of additional metadata:</p>
<ul>
<li><code>npm_version</code></li>
<li><code>node_version</code></li>
<li><code>platform</code></li>
<li><code>arch</code></li>
<li><code>node_env</code></li>
</ul>
<p>All packages in the tree are submitted to the Quick Audit endpoint.
Omitted dependency types are skipped when generating the report.</p>
<h4 id="scrubbing">Scrubbing</h4>
<p>Out of an abundance of caution, npm versions 5 and 6 would “scrub” any
packages from the submitted report if their name contained a <code>/</code> character,
so as to avoid leaking the names of potentially private packages or git
URLs.</p>
<p>However, in practice, this resulted in audits often failing to properly
detect meta-vulnerabilities, because the tree would appear to be invalid
due to missing dependencies, and prevented the detection of vulnerabilities
in package trees that used git dependencies or private modules.</p>
<p>This scrubbing has been removed from npm as of version 7.</p>
<h4 id="calculating-meta-vulnerabilities-and-remediations">Calculating Meta-Vulnerabilities and Remediations</h4>
<p>npm uses the
<a href="http://npm.im/@npmcli/metavuln-calculator"><code>@npmcli/metavuln-calculator</code></a>
module to turn a set of security advisories into a set of “vulnerability”
objects.  A “meta-vulnerability” is a dependency that is vulnerable by
virtue of dependence on vulnerable versions of a vulnerable package.</p>
<p>For example, if the package <code>foo</code> is vulnerable in the range <code>&gt;=1.0.2 &lt;2.0.0</code>, and the package <code>bar</code> depends on <code>foo@^1.1.0</code>, then that version
of <code>bar</code> can only be installed by installing a vulnerable version of <code>foo</code>.
In this case, <code>bar</code> is a “metavulnerability”.</p>
<p>Once metavulnerabilities for a given package are calculated, they are
cached in the <code>~/.npm</code> folder and only re-evaluated if the advisory range
changes, or a new version of the package is published (in which case, the
new version is checked for metavulnerable status as well).</p>
<p>If the chain of metavulnerabilities extends all the way to the root
project, and it cannot be updated without changing its dependency ranges,
then <code>npm audit fix</code> will require the <code>--force</code> option to apply the
remediation.  If remediations do not require changes to the dependency
ranges, then all vulnerable packages will be updated to a version that does
not have an advisory or metavulnerability posted against it.</p>
<h3 id="exit-code">Exit Code</h3>
<p>The <code>npm audit</code> command will exit with a 0 exit code if no vulnerabilities
were found.  The <code>npm audit fix</code> command will exit with 0 exit code if no
vulnerabilities are found <em>or</em> if the remediation is able to successfully
fix all vulnerabilities.</p>
<p>If vulnerabilities were found the exit code will depend on the
<code>audit-level</code> configuration setting.</p>
<h3 id="examples">Examples</h3>
<p>Scan your project for vulnerabilities and automatically install any compatible
updates to vulnerable dependencies:</p>
<pre lang="bash"><code>$ npm audit fix
</code></pre>
<p>Run <code>audit fix</code> without modifying <code>node_modules</code>, but still updating the
pkglock:</p>
<pre lang="bash"><code>$ npm audit fix --package-lock-only
</code></pre>
<p>Skip updating <code>devDependencies</code>:</p>
<pre lang="bash"><code>$ npm audit fix --only=prod
</code></pre>
<p>Have <code>audit fix</code> install SemVer-major updates to toplevel dependencies, not
just SemVer-compatible ones:</p>
<pre lang="bash"><code>$ npm audit fix --force
</code></pre>
<p>Do a dry run to get an idea of what <code>audit fix</code> will do, and <em>also</em> output
install information in JSON format:</p>
<pre lang="bash"><code>$ npm audit fix --dry-run --json
</code></pre>
<p>Scan your project for vulnerabilities and just show the details, without
fixing anything:</p>
<pre lang="bash"><code>$ npm audit
</code></pre>
<p>Get the detailed audit report in JSON format:</p>
<pre lang="bash"><code>$ npm audit --json
</code></pre>
<p>Fail an audit only if the results include a vulnerability with a level of moderate or higher:</p>
<pre lang="bash"><code>$ npm audit --audit-level=moderate
</code></pre>
<h3 id="configuration">Configuration</h3>
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<h4 id="audit-level"><code>audit-level</code></h4>
<ul>
<li>Default: null</li>
<li>Type: null, “info”, “low”, “moderate”, “high”, “critical”, or “none”</li>
</ul>
<p>The minimum level of vulnerability for <code>npm audit</code> to exit with a non-zero
exit code.</p>
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<h4 id="dry-run"><code>dry-run</code></h4>
<ul>
<li>Default: false</li>
<li>Type: Boolean</li>
</ul>
<p>Indicates that you don’t want npm to make any changes and that it should
only report what it would have done. This can be passed into any of the
commands that modify your local installation, eg, <code>install</code>, <code>update</code>,
<code>dedupe</code>, <code>uninstall</code>, as well as <code>pack</code> and <code>publish</code>.</p>
<p>Note: This is NOT honored by other network related commands, eg <code>dist-tags</code>,
<code>owner</code>, etc.</p>
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<h4 id="force"><code>force</code></h4>
<ul>
<li>Default: false</li>
<li>Type: Boolean</li>
</ul>
<p>Removes various protections against unfortunate side effects, common
mistakes, unnecessary performance degradation, and malicious input.</p>
<ul>
<li>Allow clobbering non-npm files in global installs.</li>
<li>Allow the <code>npm version</code> command to work on an unclean git repository.</li>
<li>Allow deleting the cache folder with <code>npm cache clean</code>.</li>
<li>Allow installing packages that have an <code>engines</code> declaration requiring a
different version of npm.</li>
<li>Allow installing packages that have an <code>engines</code> declaration requiring a
different version of <code>node</code>, even if <code>--engine-strict</code> is enabled.</li>
<li>Allow <code>npm audit fix</code> to install modules outside your stated dependency
range (including SemVer-major changes).</li>
<li>Allow unpublishing all versions of a published package.</li>
<li>Allow conflicting peerDependencies to be installed in the root project.</li>
<li>Implicitly set <code>--yes</code> during <code>npm init</code>.</li>
<li>Allow clobbering existing values in <code>npm pkg</code></li>
</ul>
<p>If you don’t have a clear idea of what you want to do, it is strongly
recommended that you do not use this option!</p>
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<h4 id="json"><code>json</code></h4>
<ul>
<li>Default: false</li>
<li>Type: Boolean</li>
</ul>
<p>Whether or not to output JSON data, rather than the normal output.</p>
<ul>
<li>In <code>npm pkg set</code> it enables parsing set values with JSON.parse() before
saving them to your <code>package.json</code>.</li>
</ul>
<p>Not supported by all npm commands.</p>
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<h4 id="package-lock-only"><code>package-lock-only</code></h4>
<ul>
<li>Default: false</li>
<li>Type: Boolean</li>
</ul>
<p>If set to true, the current operation will only use the <code>package-lock.json</code>,
ignoring <code>node_modules</code>.</p>
<p>For <code>update</code> this means only the <code>package-lock.json</code> will be updated,
instead of checking <code>node_modules</code> and downloading dependencies.</p>
<p>For <code>list</code> this means the output will be based on the tree described by the
<code>package-lock.json</code>, rather than the contents of <code>node_modules</code>.</p>
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<h4 id="omit"><code>omit</code></h4>
<ul>
<li>Default: ‘dev’ if the <code>NODE_ENV</code> environment variable is set to
‘production’, otherwise empty.</li>
<li>Type: “dev”, “optional”, or “peer” (can be set multiple times)</li>
</ul>
<p>Dependency types to omit from the installation tree on disk.</p>
<p>Note that these dependencies <em>are</em> still resolved and added to the
<code>package-lock.json</code> or <code>npm-shrinkwrap.json</code> file. They are just not
physically installed on disk.</p>
<p>If a package type appears in both the <code>--include</code> and <code>--omit</code> lists, then
it will be included.</p>
<p>If the resulting omit list includes <code>'dev'</code>, then the <code>NODE_ENV</code> environment
variable will be set to <code>'production'</code> for all lifecycle scripts.</p>
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<h4 id="workspace"><code>workspace</code></h4>
<ul>
<li>Default:</li>
<li>Type: String (can be set multiple times)</li>
</ul>
<p>Enable running a command in the context of the configured workspaces of the
current project while filtering by running only the workspaces defined by
this configuration option.</p>
<p>Valid values for the <code>workspace</code> config are either:</p>
<ul>
<li>Workspace names</li>
<li>Path to a workspace directory</li>
<li>Path to a parent workspace directory (will result in selecting all
workspaces within that folder)</li>
</ul>
<p>When set for the <code>npm init</code> command, this may be set to the folder of a
workspace which does not yet exist, to create the folder and set it up as a
brand new workspace within the project.</p>
<p>This value is not exported to the environment for child processes.</p>
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<h4 id="workspaces"><code>workspaces</code></h4>
<ul>
<li>Default: null</li>
<li>Type: null or Boolean</li>
</ul>
<p>Set to true to run the command in the context of <strong>all</strong> configured
workspaces.</p>
<p>Explicitly setting this to false will cause commands like <code>install</code> to
ignore workspaces altogether. When not set explicitly:</p>
<ul>
<li>Commands that operate on the <code>node_modules</code> tree (install, update, etc.)
will link workspaces into the <code>node_modules</code> folder. - Commands that do
other things (test, exec, publish, etc.) will operate on the root project,
<em>unless</em> one or more workspaces are specified in the <code>workspace</code> config.</li>
</ul>
<p>This value is not exported to the environment for child processes.</p>
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<h4 id="include-workspace-root"><code>include-workspace-root</code></h4>
<ul>
<li>Default: false</li>
<li>Type: Boolean</li>
</ul>
<p>Include the workspace root when workspaces are enabled for a command.</p>
<p>When false, specifying individual workspaces via the <code>workspace</code> config, or
all workspaces via the <code>workspaces</code> flag, will cause npm to operate only on
the specified workspaces, and not on the root project.</p>
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<h3 id="see-also">See Also</h3>
<ul>
<li><a href="../commands/npm-install.html">npm install</a></li>
<li><a href="../using-npm/config.html">config</a></li>
</ul>
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