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Malicious package

vite-plugin-image-analysisnpm

Advisory published Updated

vite-plugin-image-analysis is a confirmed malicious npm package (MAL-2026-14480) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.1.0, 1.1.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in vite-plugin-image-analysis (npm)

MAL-2026-14480
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall vite-plugin-image-analysis

What this malware does

The package presents itself as a Vite 'image analysis' plugin but contains no image-analysis code. Its transformIndexHtml hook injects an inline <script> into every built HTML page. The injected script reads user identity fields (account/username/userNo, phone, realName) from sessionStorage.userInfo, hooks sessionStorage.setItem so the beacon fires after login writes these fields, and sends the values along with host and OS to a remote endpoint. The destination URL is not a plain literal: a base64 blob is decoded and XOR'd with 42 at runtime in the victim's browser (atob(_c).split('').map(c => String.fromCharCode(c.charCodeAt(0) ^ 42)).join('')), and the outbound query string is similarly XOR(42)+base64 wrapped. Delivery uses stealth transports — navigator.sendBeacon, fetch(..., { mode: 'no-cors', referrerPolicy: 'no-referrer' }) — that suppress network-panel visibility and referrer leakage. A developer who adds this plugin to their Vite build unknowingly ships a covert end-user PII scraper into their production site, with the exfil destination hidden from anyone inspecting the built bundle.

Malicious versions

3 flagged
1.0.01.1.01.1.2

Indicators of compromise (SHA-256)

8d80c77b7b4e7a90be289a7b97405119318193c25b5429621deeae00f053c77b
b25366a663127e04d26191faf1726924161eb770ca68f649cc1e7e39f0d3b3d6
e61313bbeab91eb687fc7969f9dcc1478d4b672e1f02f91e56fa886e5ea7bd04

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for vite-plugin-image-analysis (3 malicious versions).

  2. If you installed it — respond

    vite-plugin-image-analysis is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If vite-plugin-image-analysis was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. vite-plugin-image-analysis on npm has been identified as a malicious package (versions 1.0.0, 1.1.0, 1.1.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-018699IN-MAL-2026-018698IN-MAL-2026-018697

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks vite-plugin-image-analysis-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
vite-plugin-image-analysis (npm) malicious package — MAL-2026-14480 | O3 Security