VulnCheck KEV: CVE-2026-45321

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...

Exploit for Embedded Malicious Code in Tanstack Tanstack\/Arktype-Adapter

Simulasi Supply Chain Attack — CVE-2026-45321 TanStack Ed...

CVE-2026-45321

creationtimestamp| type| source ---|---|--- 2026-05-12 12:20:35+00:00| seen| https://bsky.app/profile/dameyiwu.bsky.social/post/3mlnrlvzty22x 2026-05-12 15:00:07+00:00| seen| Telegram/88YkBdmMMIAUjkN-cy3WAm2Yboedxaf0GfTYOA3KafU0qTc 2026-05-12 18:40:06+00:00| seen| https://t.me/truesecator/8195...

@tanstack/router-devtools (=1.166.2) potentially affected by CVE-2026-45321 via @tanstack/react-router-devtools (=1.166.2)

@tanstack/react-router-devtools NPM version =1.166.2 is affected by a known vulnerability. The following packages have a transitive dependency on @tanstack/react-router-devtools and may be impacted: - @tanstack/router-devtools =1.166.2 Source cves: CVE-2026-45321 Source advisory:...

@tanstack/react-start (=1.167.25) potentially affected by CVE-2026-45321 via @tanstack/react-start-rsc (=0.0.5)

@tanstack/react-start-rsc NPM version =0.0.5 is affected by a known vulnerability. The following packages have a transitive dependency on @tanstack/react-start-rsc and may be impacted: - @tanstack/react-start =1.167.25 Source cves: CVE-2026-45321 Source advisory: OSV:GHSA-G7CV-RXG3-HMPX...

@tanstack/react-start (=1.166.4), @tanstack/react-start-client (=1.166.4) +11 more potentially affected by CVE-2026-45321 via @tanstack/start-storage-context (=1.166.4)

@tanstack/start-storage-context NPM version =1.166.4 is affected by a known vulnerability. The following packages have a transitive dependency on @tanstack/start-storage-context and may be impacted: - @tanstack/react-start =1.166.4 - @tanstack/react-start-client =1.166.4 -...

@tanstack/react-start (>=1.167.5 <=1.167.6), @tanstack/router-vite-plugin (=1.166.19) +3 more potentially affected by CVE-2026-45321 via @tanstack/router-plugin (=1.167.4)

@tanstack/router-plugin NPM version =1.167.4 is affected by a known vulnerability. The following packages have a transitive dependency on @tanstack/router-plugin and may be impacted: - @tanstack/react-start =1.167.5, =1.167.5, =1.167.8, =1.167.5, =1.167.6 Source cves: CVE-2026-45321 Source...

CVE-2026-45321

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...

modern-web-swiss-army-knife (>=2.7.2 <=2.7.4) potentially affected by CVE-2026-45321 via @tanstack/router-devtools (>=1.105.0 <=1.106.0)

@tanstack/router-devtools NPM version =1.105.0, =2.7.2, =2.7.4 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKROUTERDEVTOOLS-16640220...

@2digits/eslint-config (>=4.10.0 <=5.1.10), @yunarch/config-web (>=0.1.0 <=0.7.6) potentially affected by CVE-2026-45321 via @tanstack/eslint-plugin-router (>=1.115.0 <=1.155.0)

@tanstack/eslint-plugin-router NPM version =1.115.0, =4.10.0, =0.1.0, =0.7.6 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKESLINTPLUGINROUTER-16640202...

@tanstack/vue-start (>=1.141.0 <=1.167.58), @tanstack/vue-start-client (>=1.141.0 <=1.166.43) +1 more potentially affected by CVE-2026-45321 via @tanstack/vue-router (>=1.141.0 <=1.169.2)

@tanstack/vue-router NPM version =1.141.0, =1.141.0, =1.141.0, =1.141.0, =1.166.47 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKVUEROUTER-16640252...

@ardeora/start-devtools (>=1.0.0 <=1.0.1), @carvajalconsultants/headstart (>=1.0.0 <=1.0.2) +26 more potentially affected by CVE-2026-45321 via @tanstack/virtual-file-routes (>=1.121.0-alpha.28 <=1.154.7)

@tanstack/virtual-file-routes NPM version =1.121.0-alpha.28, =1.0.0, =1.0.0, =0.1.0, =1.20.3-alpha.1, =1.111.10, =1.130.0, =1.121.0-alpha.28, =1.121.0-alpha.28, =1.121.0-alpha.28, =1.121.0-alpha.28, =1.20.3-alpha.1, =1.114.29, =1.130.0, =1.97.4, =1.120.20 and more Source cves: CVE-2026-45321 Sour...

@ardeora/start-devtools (>=1.0.0 <=1.0.1), @carvajalconsultants/headstart (>=1.0.0 <=1.0.2) +33 more potentially affected by CVE-2026-45321 via @tanstack/router-generator (>=1.10.0 <=1.166.42)

@tanstack/router-generator NPM version =1.10.0, =1.0.0, =1.0.0, =0.1.1, =0.1.0, =0.1.0, =0.0.1, =0.0.1, =1.20.3-alpha.1, =1.111.10, =1.121.23, =0.0.1, =1.10.0, =1.121.0-alpha.28, =1.167.35 and more Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKROUTERGENERATOR-16640221...

@antidrawapp/runtime (>=0.1.0 <=0.1.1), @ardeora/start-devtools (>=1.0.0 <=1.0.1) +131 more potentially affected by CVE-2026-45321 via @tanstack/router-core (>=1.108.0 <=1.169.2)

@tanstack/router-core NPM version =1.108.0, =0.1.0, =1.0.0, =0.6.2, =0.6.2, =0.1.1, =0.1.1, =0.6.2, =0.2.2, =0.3.0, =0.6.0, =0.2.2, =0.1.1, =0.1.0-fork.2e294b1, =0.1.0-fork.2e294b1, =1.0.0, =1.0.2 and more Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKROUTERCORE-16640218...

@ardeora/start-devtools (>=1.0.0 <=1.0.1), @carvajalconsultants/headstart (>=1.0.0 <=1.0.2) +23 more potentially affected by CVE-2026-45321 via @tanstack/start-plugin-core (>=1.121.0-alpha.28 <=1.169.20)

@tanstack/start-plugin-core NPM version =1.121.0-alpha.28, =1.0.0, =1.0.0, =0.1.1, =1.20.3-alpha.1, =1.111.10, =1.121.23, =0.0.1, =1.20.3-alpha.1, =1.114.29, =1.121.23, =1.97.4, =1.111.10, =1.141.0, =0.3.0, =0.6.0 and more Source cves: CVE-2026-45321 Source advisory:...

@tanstack/solid-start (>=1.121.0-alpha.28 <=1.167.62) potentially affected by CVE-2026-45321 via @tanstack/solid-start-client (>=1.121.0-alpha.28 <=1.166.5)

@tanstack/solid-start-client NPM version =1.121.0-alpha.28, =1.121.0-alpha.28, =1.167.62 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKSOLIDSTARTCLIENT-16640233...

@tanstack/react-router-ssr-query (>=1.121.0-alpha.28 <=1.166.12), @tanstack/solid-router-ssr-query (>=1.133.19 <=2.0.0-beta.20) +3 more potentially affected by CVE-2026-45321 via @tanstack/router-ssr-query-core (>=1.121.0-alpha.28 <=1.168.0)

@tanstack/router-ssr-query-core NPM version =1.121.0-alpha.28, =1.121.0-alpha.28, =1.133.19, =1.140.0, =0.1.0, =0.0.0-dev, =0.23.0 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKROUTERSSRQUERYCORE-16640223...

@ardeora/start-devtools (>=1.0.0 <=1.0.1), @carvajalconsultants/headstart (>=1.0.0 <=1.0.2) +39 more potentially affected by CVE-2026-45321 via @tanstack/start-client-core (>=1.121.0-alpha.28 <=1.168.2)

@tanstack/start-client-core NPM version =1.121.0-alpha.28, =1.0.0, =1.0.0, =0.1.1, =0.0.14, =0.0.1, =0.0.1, =1.20.3-alpha.1, =1.121.0-alpha.28, =1.111.10, =1.121.23, =0.0.1, =1.121.0-alpha.28, =1.20.3-alpha.1, =1.121.0-alpha.28, =1.114.29, =1.120.20 and more Source cves: CVE-2026-45321 Source...

@d-trattner/pidex (>=0.1.1 <=0.1.3), @tanstack/react-start (>=1.121.0-alpha.28 <=1.167.65) +2 more potentially affected by CVE-2026-45321 via @tanstack/react-start-client (>=1.121.0-alpha.28 <=1.166.48)

@tanstack/react-start-client NPM version =1.121.0-alpha.28, =0.1.1, =1.121.0-alpha.28, =0.1.0, =0.0.0-dev, =0.23.0 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKREACTSTARTCLIENT-16640209...

@tanstack/vue-start (>=1.141.0 <=1.167.58) potentially affected by CVE-2026-45321 via @tanstack/vue-start-server (>=1.141.0 <=1.166.5)

@tanstack/vue-start-server NPM version =1.141.0, =1.141.0, =1.167.58 Source cves: CVE-2026-45321 Source advisory: SNYK:JS-TANSTACKVUESTARTSERVER-16640255...