---
title: "@sync-in/server — CVE-2026-58269"
description: "An authentication bypass flaw affects the npm package @sync-in/server. Affected versions: <= 2.3.0. Fixed from version 2.4.0. CVSS score 8.1."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-22-cve-2026-58269
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-22
dateModified: 2026-09-22
---
# @sync-in/server — CVE-2026-58269

An authentication bypass flaw affects the npm package @sync-in/server. Affected versions: <= 2.3.0. Fixed from version 2.4.0. CVSS score 8.1.

## What to do

Update @sync-in/server to 2.4.0 or later.

| Fact | Value |
| --- | --- |
| Package | @sync-in/server |
| Ecosystem | npm (JavaScript) |
| Class | Authentication bypass |
| Affected versions | <= 2.3.0 |
| Fixed version | 2.4.0 |
| CVSS | 8.1 |
| CVE | CVE-2026-58269 |
| GHSA | GHSA-92cr-jxw4-5wjg |
| Published on | September 22, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-92cr-jxw4-5wjg](https://github.com/advisories/GHSA-92cr-jxw4-5wjg) — GitHub Security Advisories
- [NVD — CVE-2026-58269](https://nvd.nist.gov/vuln/detail/CVE-2026-58269) — NVD

---

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