← Supply-Chain Attack Compendium

opensearch-js

Incident Summary

OpenSearch npm prereleases compromised

The Mini Shai-Hulud campaign reached OpenSearch when four prerelease versions of the official @opensearch-project/opensearch npm package were published with malicious payloads. The advisory maps the release window to May 11, 2026 EDT, or May 12 UTC, and recommends immediate removal of affected prereleases. The impact followed the broader worm pattern, with install-time credential theft risk and potential propagation through stolen developer and publishing tokens.

Date
2026-05-12
Category
Open Source
Target Surface
Package registry
Insertion Phase
CI/CD
Impact
Credential theft
Cause
CI/CD Exploit

What Was Affected

Package opensearch-js
LanguageJavaScript
ComponentLibrary
Artifact typesource archive
Domain typepackage host
Domain npmjs.com

Compromised Versions

Incident Context

Motive
Credential Theft
Attribution
TeamPCP
Transitive
Yes
User Impact
0
Observed Duration
0 days

Evidence

Compromised Artifacts

Current Artifacts and Analysis

External References

Source Data

Source record: oss/attacks/opensearch-js/meta.yaml