Summary
Togoder Security scanned the npm package react@18.3.1 on Oct 4, 2026. An AI review of 8 source files produced no findings. No malicious behavior, install-time payloads, credential theft or exfiltration were identified.
Findings
No findings. The reviewer saw nothing malicious or risky in this version.
Files reviewed
| File | Verdict | What the reviewer saw |
|---|---|---|
| cjs/react-jsx-dev-runtime.development.js | safe | No malicious patterns detected |
| cjs/react-jsx-runtime.development.js | safe | No malicious patterns detected; this is the legitimate React JSX runtime development build from the official React package. |
| cjs/react.development.js | safe | This is the official React 18.3.1 development build; all code is standard React internals with no malicious patterns detected. |
| cjs/react.shared-subset.development.js | safe | No malicious patterns detected |
| index.js | safe | No malicious patterns detected; the file is a standard conditional export entry point for the React package. |
| jsx-dev-runtime.js | safe | No malicious patterns detected; the code simply conditionally re-exports React's JSX dev runtime based on NODE_ENV. |
| jsx-runtime.js | safe | No malicious patterns detected; file is a standard React JSX runtime entry point that conditionally loads production or development builds based on NODE_ENV. |
| react.shared-subset.js | safe | No malicious patterns detected |
Affected version ranges
None of the 2 scanned versions of react are flagged high or critical. The latest scanned version, 19.3.0, is medium risk. Only versions we have scanned are listed; unscanned versions between them are not covered.
| Versions | Verdict | Count | Range | Top findings |
|---|---|---|---|---|
| 19.3.0 | Needs review | 1 | 19.3.0 | |
| 19.0.0 – 19.2.8 | Not scanned | 2 | >=19.0.0 <=19.2.8 | |
| 18.3.1 | No issues | 1 | 18.3.1 |
Full list, including published versions not scanned yet: version ranges API.
Scanned versions of react
Frequently asked questions
Is react safe to use?
Our AI source review of react@18.3.1 found no malicious code: no install-time payloads, credential theft, exfiltration, obfuscated loaders or backdoors.
Does react contain malware?
No malware was identified in react@18.3.1 when Togoder Security scanned it on Oct 4, 2026. A new version can still introduce malicious code, so scan the exact versions in your lockfile.
How was react checked?
Togoder Security downloaded the published npm package and had an AI model read its 8 source files, looking for install scripts, credential access, network exfiltration, obfuscation, backdoors and crypto-wallet theft. The results are cached by file hash and shown here.
How do I scan react together with the rest of my dependencies?
Upload your lockfile at https://security.togoder.click/scan or call the API documented at https://security.togoder.click/api-docs. Files that have already been scanned, like the ones in react@18.3.1, cost nothing.