CVE-2026-33244Disclosure(shopify / react-router)

LOWCVSS 5.4 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch shopify react-router systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP `Location` header value can permit Cross-Site Scripting (XSS) in the statically generated HTML files if the redirect location comes from an untrusted source. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in version 7.13.2.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • react-router

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
react-router

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-03: 2Patch / Workaround · 2026-06-03: 1Technical Details · 2026-06-03: 206-03
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • あかつきゆいと.tsx@UniPro@yuito_it_
    Disclosure

    CVE取得しました〜 CVE-2026-33244 軽微なものではありますが、React RouterのXSSの脆弱性です。 パッチはだいぶ前に公開されているので適切にアップデートすることを推奨します。 https://github.com/remix-run/react-router/security/advisories/GHSA-f22v-gfqf-p8f3 #security #react #react_router #CVE

    Post summary

    The post announces CVE-2026-33244, an XSS vulnerability in React Router, and recommends applying the publicly released patch.

    050141783
    1.2K followersView on X
  • DailyCVE@dailycve
    Disclosure

    🟠 #React Router: Stored Cross-Site Scripting via Unescaped Location Header in Prerendered Redirect #HTML (#CVE‑2026‑33244) (Medium) -DC-Jun2026-156 https://dailycve.com/react-router-stored-cross-site-scripting-via-unescaped-location-header-in-prerendered-redirect-html-cve-2026-33244-medium-dc-jun2026-156/

    Post summary

    This tweet announces CVE‑2026‑33244, a stored XSS flaw in React Router, giving basic technical details but no PoC, exploit code, active exploitation evidence, or patch information.

    0000041
    208 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appshopifyreact-router-node.js-

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