Malware in @tanstack/* packages exfiltrates cloud credentials, GitHub tokens, and SSH keys - @tanstack/react-start-rsc

Description

On 2026-05-11, between approximately 19:20 and 19:26 UTC, 84 malicious versions across 42 @tanstack/* packages were published to the npm registry. The publishes were authenticated via the legitimate GitHub Actions OIDC trusted-publisher binding for TanStack/router, but the publish workflow itself was not modified.

Recommendation

Update the @tanstack/react-start-rsc package to the latest compatible version. Followings are version details:

• Affected version(s): = 0.0.50
• Patched version(s): 0.0.51

References

• GHSA-g7cv-rxg3-hmpx
• socket.dev
• tanstack.com
• www.stepsecurity.io
• www.cisa.gov
• CVE-2026-45321
• CWE-506
• CAPEC-310
• OWASP 2021-A6