Cross-Site Scripting (XSS) in @quasar/app-vite (CVE-2026-106107)
Summary
Cross-site scripting in @quasar/app-vite (CVE-2026-106107). Risk of unauthorized operations or information disclosure. Exploitable via ssrContext.nonce. Mitigation: upgrade to 3.3.0 or later.
Original description
The description as published by the source.
Several @quasar/app-vite SSR and SSG renderer paths interpolate ssrContext.nonce directly into quoted HTML attributes. An application that derives or overrides the nonce using untrusted data can allow a quote to terminate the nonce attribute and inject additional attributes or markup into generated HTML.
Cryptographically generated base64 or base64url nonces are not directly affected because they do not contain HTML attribute delimiters. Exploitation requires an application to place attacker-controlled or otherwise unsafe data in ssrContext.nonce.
The remediation centralizes nonce handling across development SSR/SSG, production SSR, production SSG, critical CSS, store-state scripts, and Vue Devtools. It validates the value as a non-empty base64/base64url CSP nonce and HTML-encodes the attribute value before rendering.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-106107 has been found in @quasar/app-vite.
Attackers can target a specific entry point like ssrContext.nonce over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade @quasar/app-vite to 3.3.0 or later.
If unsure, ask your IT team or search "@quasar/app-vite CVE-2026-106107" on the vendor's site.
CVE-2026-106107 (@quasar/app-vite) — CWE-79
Attack surface: ssrContext.nonce
Patched: 3.3.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in @quasar/app-vite. Attackers reach the vulnerable code path via ssrContext.nonce.
Check the vendor advisory for the affected versions of @quasar/app-vite. Attack surface: ssrContext.nonce.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 3.3.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r '@quasar/app-vite' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r '@quasar/app-vite' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
@quasar/app-viteを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade @quasar/app-vite to 3.3.0ステージング環境で 3.3.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- web github.com
- web github.com
- web github.com
- web nvd.nist.gov
- web github.com