---
id: CVE-2026-106104
title: >-
  Quasar Framework is a framework for building high-performance Vue.js user
  interfaces
summary: >-
  Quasar Framework is a framework for building high-performance Vue.js user
  interfaces. Prior to 2.23.3, Platform.parseSSR() passed an unbounded
  User-Agent request header to getMatch() in
  ui/src/plugins/platform/Platform.js, whose browser-…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-1333
vendor: quasarframework
product: quasar
affected:
  - quasar < 2.23.3
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T20:03:40.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106104'
references:
  - url: >-
      https://github.com/quasarframework/quasar/commit/7a954ddafa756afe95c8f633f48ed68a07209d3d
    label: security-advisories@github.com
  - url: 'https://github.com/quasarframework/quasar/releases/tag/quasar-v2.23.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/quasarframework/quasar/security/advisories/GHSA-68jq-fhch-4xq4
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-06T18:11:36.240Z'
---

## Overview

Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.23.3, Platform.parseSSR() passed an unbounded User-Agent request header to getMatch() in ui/src/plugins/platform/Platform.js, whose browser-detection expressions combined greedy captures with repeated unbounded scans. Platform belongs to autoInstalledPlugins, so this parsing occurs before routing for every SSR request. A crafted unauthenticated request containing repeated version tokens without a terminating Safari token causes super-linear backtracking and blocks the Node.js event loop, delaying every other SSR request. SPA, PWA, Electron, Cordova, Capacitor, browser-extension, and static-site-generation targets are not affected because they do not parse an attacker-controlled request header through this path. This issue is fixed in version 2.23.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.