feed-widget-helpernpm
feed-widget-helper is a confirmed malicious npm package (MAL-2026-16332) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in feed-widget-helper (npm)
What this malware does
The package's main entry executes a top-level side effect that reads document.cookie and sends it via fetch to a hardcoded webhook.site collector URL (http://webhook.site/67dba5f1-70f5-413e-9299-2ad886bb77fa) over plain HTTP. Any environment that imports or requires this package leaks its browser cookies to an anonymous third-party listener controlled by the package author. The destination is a webhook.site inbox — an anonymous request-capture service unrelated to any legitimate feed-widget functionality — and the transmission fires unconditionally on load, with no caller opt-in or configuration.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for feed-widget-helper (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging feed-widget-helper across your stack and pipelines.
If you installed it — respond
Remove feed-widget-helper from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If feed-widget-helper was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks feed-widget-helper before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
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 malicious outbound activity and severs the channel.