TanStack Npm Packages Compromised Inside The Mini Shai Hulud Supply Chain Attack
2026-05-14T08:52:07Z•aac3ea643b37f35b558b4eaeb6b0cb00e03d0de94e8f1ff3dbe62de5bc0dee08
buncache-poisoningcap-jscredential-stealergithub-actionsmbtmini-shai-huludnpmoidc-token-exfiltrationpwn-requestpypisapslsasupply-chaintanstack
What happened
Multiple related supply‑chain attacks in late Apr–May 2026 (self‑branded “Mini Shai‑Hulud”) abused GitHub Actions to inject malicious code and exfiltrate secrets. On 11 May 2026 a worm compromised 84 npm artifacts across 42 @tanstack/* packages (and other namespaces such as @squawk/* and @mistralai/*) via a chained “Pwn Request”, cache‑poisoning, and OIDC token extraction from runner memory — producing the first npm supply‑chain compromise that retained valid SLSA Build Level 3 attestations. Separate but related incidents include a malicious PyPI release of lightning that contains a Bun‑based,
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- snyk_blog
- Record identifier
- aac3ea643b37f35b558b4eaeb6b0cb00e03d0de94e8f1ff3dbe62de5bc0dee08
- Enrichment time
- 2026-05-14T08:52:07Z
- AI-assisted enrichment
- Yes
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