{"id":"CVE-2026-45321","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-45321","generatedAt":"2026-10-28T02:55:19.085Z","title":"TanStack Unspecified Vulnerability","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. 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.","published":"2026-05-12T01:16:47.000Z","lastModified":"2026-10-26T18:10:00.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},"cwe":["CWE-506"],"affected":["tanstack/tanstack\\/arktype-adapter","tanstack/tanstack\\/eslint-plugin-router","tanstack/tanstack\\/eslint-plugin-start","tanstack/tanstack\\/history","tanstack/tanstack\\/nitro-v2-vite-plugin","tanstack/tanstack\\/react-router","tanstack/tanstack\\/react-router-devtools","tanstack/tanstack\\/react-router-ssr-query","tanstack/tanstack\\/react-start","tanstack/tanstack\\/react-start-client","tanstack/tanstack\\/react-start-rsc","tanstack/tanstack\\/react-start-server","tanstack/tanstack\\/router-cli","tanstack/tanstack\\/router-core","tanstack/tanstack\\/router-devtools","tanstack/tanstack\\/router-devtools-core","tanstack/tanstack\\/router-generator","tanstack/tanstack\\/router-plugin","tanstack/tanstack\\/router-ssr-query-core","tanstack/tanstack\\/router-utils","tanstack/tanstack\\/router-vite-plugin","tanstack/tanstack\\/solid-router","tanstack/tanstack\\/solid-router-devtools","tanstack/tanstack\\/solid-router-ssr-query","tanstack/tanstack\\/solid-start","tanstack/tanstack\\/solid-start-client","tanstack/tanstack\\/solid-start-server","tanstack/tanstack\\/start-client-core","tanstack/tanstack\\/start-fn-stubs","tanstack/tanstack\\/start-plugin-core","tanstack/tanstack\\/start-server-core","tanstack/tanstack\\/start-static-server-functions","tanstack/tanstack\\/start-storage-context","tanstack/tanstack\\/valibot-adapter","tanstack/tanstack\\/virtual-file-routes","tanstack/tanstack\\/vue-router","tanstack/tanstack\\/vue-router-devtools","tanstack/tanstack\\/vue-router-ssr-query","tanstack/tanstack\\/vue-start","tanstack/tanstack\\/vue-start-client","tanstack/tanstack\\/vue-start-server","tanstack/tanstack\\/zod-adapter","mistral/mistralai","mistral/mistralai\\/mistralai","mistral/mistralai\\/mistralai-azure","mistral/mistralai\\/mistralai-gcp","antoinebcx/ml-toolkit-ts","antoinebcx/ml-toolkit-ts\\/preprocessing","antoinebcx/ml-toolkit-ts\\/xgboost","beproduct/beproduct\\/nestjs-auth","christianalares/git-git-git","christianalares/git branch selector","christianalares/nextmove-mcp","christianalares/tolka\\/cli","multiagentcognition/cmux-agent-mcp","abhishake1/supersurkhet\\/cli","abhishake1/supersurkhet\\/sdk","abhishake1/taskflow-corp\\/cli","kilbot/tallyui\\/components","kilbot/tallyui\\/connector-medusa"],"epss":{"score":0.03278,"percentile":0.8834,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.01054,"percentile":0.62855},{"date":"2026-10-25","score":0.03278,"percentile":0.88338}]},"kev":{"listed":true,"dateAdded":"2026-05-27","dueDate":"2026-06-10","knownRansomwareCampaignUse":"Known","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nThis vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx ; https://nvd.nist.gov/vuln/detail/CVE-2026-45321"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://github.com/TanStack/router/issues/7383","tags":["Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://tanstack.com/blog/npm-supply-chain-compromise-postmortem","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem","tags":["Exploit","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45321","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45321","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}