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Malicious package

feed-widget-helpernpm

Advisory published Updated

feed-widget-helper is a confirmed malicious npm package (MAL-2026-16332) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.6, 1.0.8). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in feed-widget-helper (npm)

MAL-2026-16332
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall feed-widget-helper

What this malware does

On load, index.js schedules a setTimeout (~2s) that fetches the current origin's /profile endpoint, parses the returned HTML, extracts a.flag-value element (falling back to the entire page body), and issues a POST to /addPost with the extracted content as JSON. The behavior fires unconditionally without user interaction, uses the embedding page's authenticated session to read private profile data, and then publishes that data through a state-changing endpoint on the same origin. The package name ("feed-widget-helper") and package.json are placeholders: description, author, repository, and keywords are all empty, and the shipped code has no relation to any feed-widget functionality. The shape is a same-origin CSRF/exfiltration payload rather than a helper library.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

3 flagged
1.0.01.0.61.0.8

Indicators of compromise (SHA-256)

b5a81a96715497c25b18687ba7b9b42e919c23e700ede8d9944d41d6052d7f83
3fc992a95937fa84e5732ec8317a3c787f20b2cde15f14ea13f46631aea0fbdc
e9c3f4f4751b0adffb78a311ee048162a853729a5dd1d0826593f394a4d663e2
e8b286173148884a6c5d368034a9bff960825f2427bfb089ab017405424f74bf

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for feed-widget-helper (3 malicious versions).

  2. If you installed it — respond

    feed-widget-helper 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 feed-widget-helper 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. feed-widget-helper on npm has been identified as a malicious package (versions 1.0.0, 1.0.6, 1.0.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020231IN-MAL-2026-020519IN-MAL-2026-020520GHSA-r52r-vpcc-38v2

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks feed-widget-helper-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

feed-widget-helper (npm) malicious package — MAL-2026-16332 | O3 Security