"A Mini Shai-Hulud Has Appeared": Bun-Based Stealer Hits SAP @cap-js and mbt npm Packages
2026-04-29T20:52:19Z•9b211efa42dffab5314ec9882ee6f4e9e3c7636f51a8230d54f98703b65ac497
AtlassianCVE-2026-40478CVSS-9.1GitHub-ActionsJiraPyPISAPSSH-keysSnykSnyk-Agent-FixThymeleafagentic-architectureautomated-remediationbackdoorcap-jscloud-credentialscredential-theftdbtelementary-datamalicious-packagembtnpmpatch-availablesupply-chaintemplate-injection
What happened
Snyk published multiple advisories (Apr 27–29, 2026) covering active supply‑chain and template‑injection incidents plus product/partnership news. Key incidents: a Bun‑based stealer dubbed “Mini Shai‑Hulud” compromised four SAP‑ecosystem npm packages (cap-js and mbt families); a malicious PyPI release of elementary-data (v0.23.3) used a GitHub Actions script injection to install a credential‑stealing backdoor targeting dbt profiles, cloud provider keys, and SSH secrets; and a high‑severity Thymeleaf template injection (CVE-2026-40478, CVSS 9.1) whose exploitability is conditional on unsafe use—
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- snyk_blog
- Record identifier
- 9b211efa42dffab5314ec9882ee6f4e9e3c7636f51a8230d54f98703b65ac497
- Enrichment time
- 2026-04-29T20:52:19Z
- AI-assisted enrichment
- Yes
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