react-loader-spinner is a React component library that renders a collection of pre-built SVG loading spinners, and because it draws graphics rather than handling data, its security profile is almost entirely about supply chain hygiene — provenance, transitive dependencies, and keeping it patched — not about runtime exploitation. It is one of those packages people install once, never think about again, and leave floating on a caret range for years. That "install and forget" habit is the actual risk, not the spinner code.
If you have searched npm for react-loader-spinner npm you have probably seen several similarly named packages. That collision is worth pausing on before you type npm install.
What it does and why runtime risk is low
The library exports named spinner components you drop in while data loads:
import { ThreeDots } from 'react-loader-spinner';
function Loading() {
return (
<ThreeDots
height="80"
width="80"
color="#4f46e5"
ariaLabel="loading"
visible={true}
/>
);
}
The props are numbers and strings that configure SVG attributes. There is no network call, no HTML parsing, no user input flowing into a dangerous sink. React renders the SVG through its normal escaping path. So the classic web vulnerabilities — XSS, injection, SSRF — do not have an obvious foothold here as long as you pass literal or trusted config values, which you almost always do for a spinner. The realistic worry is not what the package does today; it is what an unattended dependency could become tomorrow.
The provenance check that matters most
Because "react loader spinner" is a generic name, npm hosts multiple lookalikes: react-loader, react-spinner-loader, react-spinners, and others. Some are legitimate alternatives, and some are the kind of typosquat-adjacent noise that supply chain attackers exploit. Before installing, confirm three things:
- The exact package name is
react-loader-spinner. - The weekly download count matches a widely used library (this one has substantial adoption).
- The linked GitHub repository is the canonical one and shows recent, real activity.
Thirty seconds of verification here closes off installing the wrong package, which is a far more common failure than a vulnerability in the right one.
Transitive dependencies and patch cadence
Even a UI-only package pulls in something — build helpers, an SVG utility, peer-declared React. Look at what actually resolved:
npm ls react-loader-spinner
npm audit --production
If the audit flags something in the transitive tree, that is your signal to upgrade the spinner package to a release that bumped the offending dependency. The package is actively maintained with releases in its current major line, so upgrades are generally available — but you have to take them. Pin the version in your lockfile and let Renovate or Dependabot open the upgrade pull requests so a human reviews each bump instead of silently floating to whatever ^ resolves to.
Where this fits in a bigger dependency policy
One spinner package is trivial. The problem is that a real app has dozens of these small, low-attention dependencies, and collectively they are a large chunk of your attack surface. The teams that get breached through npm rarely get hit through their marquee framework; they get hit through the forgotten helper nobody was watching. Running an SCA scan in CI gives you one place to see every direct and transitive advisory, and a platform such as Safeguard can flag a vulnerable transitive dependency under a package like this even when the direct install looks clean. For picking the right tool, the pricing page lays out what per-scan coverage includes.
A sensible operating rule
Treat every small UI dependency the same way: verify the name and repo at install time, pin the version, enable an update bot, and include it in a CI audit that fails the build on high-severity advisories. That rule costs nothing per package and scales to hundreds of them, which is the only way this stays manageable.
FAQ
Is react-loader-spinner safe to use?
Yes. It is a UI-only library that renders SVG spinners with no data handling, so it has no obvious runtime exploitation path when you pass trusted config values. Its risk is ordinary supply chain hygiene, managed by pinning, auditing, and keeping it updated.
How do I make sure I install the right package?
Confirm the exact name react-loader-spinner, check that the weekly download count matches a popular library, and open the linked GitHub repository to verify it is canonical. Several similarly named packages exist on npm.
Does react-loader-spinner introduce XSS risk?
Not in normal use. Its props configure SVG attributes and React escapes its output. You would only create risk by feeding untrusted values into a custom wrapper that bypasses React's rendering, which the library does not require.
How should I keep it patched?
Pin the version in your lockfile, enable Dependabot or Renovate for automated upgrade pull requests, and run npm audit plus an SCA scan in CI so transitive advisories fail the build.