MalwarePublished 6 Jul 2026Updated 14 Jul 2026

sams-sr-sdk-h5 (npm) · Malicious Code

Affects sams-sr-sdk-h5Source GCVE Database

Malicious package : remove sams-sr-sdk-h5 and rotate any secrets on hosts that installed it.

Data as of 14 Jul 2026, 09:37 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-10233

What to do

Remove sams-sr-sdk-h5 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
npmsams-sr-sdk-h5	Affected =7.0.0	Fixed in–

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Description

The sams-sr-sdk-h5 npm package is a malicious package published to perform dependency confusion attacks by impersonating an internal package namespace. It includes a preinstall script that executes automatically during npm install, collecting host metadata including public IP, hostname, OS username, and runtime environment, then sends this data to an attacker-controlled Sentry project. The package also silently routes application error telemetry and end-user PII to the attacker's Sentry endpoint if used as intended. This behavior constitutes reconnaissance and data exfiltration. The affected version is 7.0.0. There is no official patch or remediation guidance provided.

Impact

Installing this package results in automatic exfiltration of sensitive host metadata including public IP address, hostname, OS username, and runtime environment details to an attacker-controlled Sentry project. Additionally, any application errors and end-user PII may be silently sent to the attacker if the package is used without specifying a different Sentry DSN. This compromises confidentiality and privacy of the host and potentially end users. The presence of this package on a system indicates a high likelihood of compromise, and all secrets and keys on the affected system should be considered exposed and rotated. The package enables attacker reconnaissance and data leakage without user interaction beyond installation.

Defensive guidance

Users should immediately remove the sams-sr-sdk-h5 package version 7.0.0 if installed. Because the package executes code at install time that exfiltrates sensitive data, any system with this package installed should be considered fully compromised. It is strongly recommended to rotate all secrets and keys stored on the affected system from a separate, trusted environment. Avoid installing packages from untrusted or unknown sources, especially those mimicking internal namespaces. Monitor for and block suspicious packages in your supply chain. Check vendor advisories or trusted security sources for updates on remediation or detection tools.

Summary

The sams-sr-sdk-h5 package was published to the npm registry by an attacker as part of a dependency confusion campaign targeting organizations using an internal 'sams' namespace. The package declares a preinstall hook that runs automatically upon installation, which executes a script that collects the installing host's public IP address and other personally identifiable information (PII) such as hostname, OS username, and runtime metadata. This information is sent to a hardcoded attacker-controlled Sentry DSN with sendDefaultPii enabled. Additionally, the package's initialization silently forwards application errors and PII to the attacker's Sentry project if no DSN is supplied by the user, further compromising privacy and security. The package name and minimal README are crafted to mimic legitimate internal packages, increasing the likelihood of accidental installation. The malicious payload is identical across packages published by this attacker, differing only in package name and target Sentry project. The affected version is exactly 7.0.0.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Jul 2026, 09:37 UTC

Technical details

References

Community reviews