---
title: "@tanstack/start-server-core — CVE-2026-102989"
description: "A cross-site scripting flaw affects the npm package @tanstack/start-server-core. Affected versions: >= 1.143.12, < 1.169.39. Fixed from version 1.169.39. CVSS score 9.3."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-15-cve-2026-102989
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-15
dateModified: 2026-10-15
---
# @tanstack/start-server-core — CVE-2026-102989

A cross-site scripting flaw affects the npm package @tanstack/start-server-core. Affected versions: >= 1.143.12, < 1.169.39. Fixed from version 1.169.39. CVSS score 9.3.

## What to do

Update @tanstack/start-server-core to 1.169.39 or later.

| Fact | Value |
| --- | --- |
| Package | @tanstack/start-server-core |
| Ecosystem | npm (JavaScript) |
| Class | Cross-site scripting |
| Affected versions | >= 1.143.12, < 1.169.39 |
| Fixed version | 1.169.39 |
| CVSS | 9.3 |
| CVE | CVE-2026-102989 |
| GHSA | GHSA-qx66-fv34-fjm8 |
| Published on | October 15, 2026 |
| Severity | Critical |

## Sources

- [GitHub Security Advisory — GHSA-qx66-fv34-fjm8](https://github.com/advisories/GHSA-qx66-fv34-fjm8) — GitHub Security Advisories
- [NVD — CVE-2026-102989](https://nvd.nist.gov/vuln/detail/CVE-2026-102989) — NVD

---

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