{"id":"CVE-2026-102989","title":"TanStack Router is a client-first, server-capable, fully type-safe router and full-stack framework for the web","summary":"TanStack Router is a client-first, server-capable, fully type-safe router and full-stack framework for the web. From 1.143.12 until 1.169.39 for @tanstack/start-server-core, 1.168.60 for @tanstack/react-start, 1.168.57 for @tanstack/soli…","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","cwe":["CWE-79"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T17:17:14.797","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102989","references":[{"url":"https://github.com/TanStack/router/commit/d521abd71c69f1ff010bb3def4d417cb5fa058cb","label":"security-advisories@github.com"},{"url":"https://github.com/TanStack/router/pull/8573","label":"security-advisories@github.com"},{"url":"https://github.com/TanStack/router/releases/tag/release-2026-09-30-1747","label":"security-advisories@github.com"},{"url":"https://github.com/TanStack/router/security/advisories/GHSA-qx66-fv34-fjm8","label":"security-advisories@github.com"}],"tags":["nvd"],"ingestedAt":"2026-10-13T17:38:53.176Z","slug":"CVE-2026-102989","body":"## Overview\n\nTanStack Router is a client-first, server-capable, fully type-safe router and full-stack framework for the web. From 1.143.12 until 1.169.39 for @tanstack/start-server-core, 1.168.60 for @tanstack/react-start, 1.168.57 for @tanstack/solid-start, and 1.168.56 for @tanstack/vue-start, an unauthenticated attacker can place non-public fields in a server-function request payload so that attacker-controlled middleware state reaches the error path and a response-shaped object is accepted as an HTTP response. A crafted server-function URL can therefore return attacker-controlled HTML from the application's origin; when a visitor opens the URL, the injected script can access same-origin data and issue requests with the visitor's authority. This issue is fixed in @tanstack/start-server-core 1.169.39, @tanstack/react-start 1.168.60, @tanstack/solid-start 1.168.57, and @tanstack/vue-start 1.168.56.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}