CVE-2026-45321
TanStack contains an unspecified vulnerability that allowed malicious versions of the product to be published to the npm registry to publish credential-stealing malware under a trusted identity.
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CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCWE-506CISA KEV
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS
Afecta
tanstack:tanstack\/arktype-adaptertanstack:tanstack\/eslint-plugin-routertanstack:tanstack\/eslint-plugin-starttanstack:tanstack\/historytanstack:tanstack\/nitro-v2-vite-plugintanstack:tanstack\/react-routertanstack:tanstack\/react-router-devtoolstanstack:tanstack\/react-router-ssr-querytanstack:tanstack\/react-starttanstack:tanstack\/react-start-clienttanstack:tanstack\/react-start-rsctanstack:tanstack\/react-start-servertanstack:tanstack\/router-clitanstack:tanstack\/router-coretanstack:tanstack\/router-devtoolstanstack:tanstack\/router-devtools-coretanstack:tanstack\/router-generatortanstack:tanstack\/router-plugintanstack:tanstack\/router-ssr-query-coretanstack:tanstack\/router-utilstanstack:tanstack\/router-vite-plugintanstack:tanstack\/solid-routertanstack:tanstack\/solid-router-devtoolstanstack:tanstack\/solid-router-ssr-querytanstack:tanstack\/solid-starttanstack:tanstack\/solid-start-clienttanstack:tanstack\/solid-start-servertanstack:tanstack\/start-client-coretanstack:tanstack\/start-fn-stubstanstack:tanstack\/start-plugin-coretanstack:tanstack\/start-server-coretanstack:tanstack\/start-static-server-functionstanstack:tanstack\/start-storage-contexttanstack:tanstack\/valibot-adaptertanstack:tanstack\/virtual-file-routestanstack:tanstack\/vue-routertanstack:tanstack\/vue-router-devtoolstanstack:tanstack\/vue-router-ssr-querytanstack:tanstack\/vue-starttanstack:tanstack\/vue-start-clienttanstack:tanstack\/vue-start-servertanstack:tanstack\/zod-adapterDescripción técnica
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. The attacker chained three known vulnerability classes — a pull_request_target "Pwn Request" misconfiguration, GitHub Actions cache poisoning across the fork↔base trust boundary, and runtime memory extraction of the OIDC token from the Actions runner process — to publish credential-stealing malware under a trusted identity. Each affected package received exactly two malicious versions, published a few minutes apart.
Referencias
- 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
- 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