MalwarePublished 14 Aug 2026

notafollower1226 (npm) · Malicious Code

Affects notafollower1226Source GCVE Database

Malicious package : remove notafollower1226 and rotate any secrets on hosts that installed it.

Data as of 14 Aug 2026, 16:50 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-14036

What to do

Remove notafollower1226 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmnotafollower1226	Affected 1.0.0 – 1.0.5 6 affected builds	Fixed in–

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Description

The npm package 'notafollower1226' contains malicious code that executes during installation. Its postinstall script collects sensitive metadata from ECS container environments and environment variables related to ownership and authorship. This information is exfiltrated via a POST request to an anonymous ngrok tunnel, which is typical of supply-chain reconnaissance attacks. The package does not provide any legitimate functionality beyond this data exfiltration behavior.

Impact

Sensitive metadata and environment variables from ECS container environments are exfiltrated to an anonymous external endpoint. This can lead to exposure of internal infrastructure details, potentially aiding attackers in further reconnaissance or targeted attacks against CI/build systems. There is no indication of active exploitation in the wild at this time.

Defensive guidance

Users should avoid installing or using the 'notafollower1226' package versions 1.0.0 through 1.0.5. Review and remove the package from any build or deployment pipelines. Monitor for any unauthorized network traffic to suspicious external endpoints such as ngrok tunnels. Check vendor advisories or trusted security sources for updates or official fixes.

Summary

The 'notafollower1226' npm package versions 1.0.0 through 1.0.5 include a postinstall script that automatically runs on npm install. This script queries the ECS container metadata endpoint to gather the Task ARN, container image list, and logging configuration. It also enumerates environment variables for keys matching patterns related to ownership and authorship. The collected data is sent via a curl POST request to a hardcoded anonymous ngrok-free.dev subdomain, which is an ephemeral tunnel commonly used for supply-chain reconnaissance against CI/build infrastructure. The package lacks any other functionality consistent with its declared purpose, indicating its sole intent is to act as an exfiltration beacon.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Aug 2026, 16:50 UTC

Technical details

References

Community reviews