onyx --cves cve-2026-45321
CVE-2026-45321
- score
- 1.8
- cvss
- 9.6
- epss
- 1.1%
- published
- 2026-05-12
- kev added
- 2026-05-27
- first seen
TanStack @tanstack/* packages contain a credential-stealing malware injection caused by chained vulnerabilities in GitHub Actions workflows and OIDC token extraction, letting attackers publish malicious versions under trusted identity, exploit requires GitHub Actions misconfiguration and cache poisoning.
Timeline
How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.
- Published
- Added to CISA KEV
- Tracked by Onyx
- Public PoC
Exploit availability
Public PoC flagged by vulnx; no direct exploit link among the citations.
Weaknesses
References 8
- https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45321
- https://www.ic3.gov/CSA/2026/260702.pdf
- https://nefariousplan.com/posts/tanstack-cve-2026-45321-bundle-size-poisoned-release-restored
- https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/5eca6dd4-073c-4bd1-b174-250eb902c1bf
- https://github.com/TanStack/router/issues/7383
- https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx
- https://tanstack.com/blog/npm-supply-chain-compromise-postmortem