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CVE-2026-106106— Quasar Framework: SSR/SSG dev error page discloses the full shell environment and its </script> escape is bypassable

Quick assessment

Affected
quasarframework quasar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Quasar 框架是一个用于构建高性能 Vue.js 用户界面的框架。在 @quasar/render-ssr-error 2.2.4 和 @quasar/app-vite 3.3.0 版本之前， 中的 函数会利用 中的诊断数据，将 、请求头和 Cookie 序列化为 HTTP 页面，并由 返回。同时，开发服务器默认监听所有网络接口。任何处于同一网络环境中的客户端，如果通过此仅限开发环境使用的错误路径触发了 SSR（服务端渲染）或 SSG（静态站点生成）渲染失败，就可能获取到 Shell 环境中的敏感信息。 该渲染

CVSS 7.1 · High

Affected Version Matrix 3

VendorProduct Version RangeStatus
@quasar app-vite < 3.3.0 affected
@quasar render-ssr-error < 2.2.4 affected
quasarframework quasar < 2.23.3 affected
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I. Basic Information for CVE-2026-106106

Vulnerability Information
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Vulnerability Title
Quasar Framework: SSR/SSG dev error page discloses the full shell environment and its </script> escape is bypassable
Source: CVE Program / CVE List V5
Vulnerability Description
Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0, renderSSRError() in utils/render-ssr-error/src/index.js used diagnostic data from utils/render-ssr-error/src/env.js to serialize process.env, request headers, and cookies into the HTTP page returned by serve.devError(), while the development server listened on all interfaces by default. Any network-adjacent client that reaches an SSR or SSG render failure through this development-only error path can obtain shell environment secrets. The renderer escaped only one exact lowercase script closing-tag spelling, so case variants and valid closing-tag delimiter variants in reflected diagnostic data could terminate the script element and inject markup; executing the injected code in a developer browser additionally requires the payload to accompany that developer's request. This issue is fixed in @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
quasarframework quasar < 2.23.3 -
@quasar render-ssr-error < 2.2.4 -
@quasar app-vite < 3.3.0 -

II. Public POCs for CVE-2026-106106

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III. Intelligence Information for CVE-2026-106106

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Other References for CVE-2026-106106 (3)

Same Patch Batch · quasarframework · 2026-10-06 · 8 CVEs total

CVE-2026-106102 10.0 CRITICAL Quasar Framework: Stored/Reflected XSS via unescaped SSR meta tag rendering in getHead()
CVE-2026-106104 8.7 HIGH Quasar Framework: Super-linear regex backtracking on User-Agent lets one request stall a Q
CVE-2026-106105 8.4 HIGH Quasar Framework: Development TLS private keys are cached with overly permissive filesyste
CVE-2026-106107 8.3 HIGH Quasar Framework: App Vite SSR and SSG nonce attributes are not safely constrained
CVE-2026-106103 7.1 HIGH Quasar Framework: Path Traversal / Arbitrary File Write via crafted Icon Genie profile
CVE-2026-106109 4.1 MEDIUM Quasar Framework: App Vite build cleanup can recursively remove unsafe configured output d
CVE-2026-106101 3.1 LOW Quasar Framework: DOM Clobbering in Quasar openURL() SafariViewController Integration Caus

IV. Related Vulnerabilities

Same product: quasar
Same vendor: quasarframework
Same weakness: CWE-79

V. Comments for CVE-2026-106106

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