VulnSocial

CVE-2026-42342Disclosure(shopify / react-router)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the __manifest endpoint, resulting in response time degradation and/or service unavailability for end users. This affects React Router Framework Mode applications as well as Remix applications. This does not impact applications using Declarative Mode (`<BrowserRouter>`) or Data Mode (`createBrowserRouter/<RouterProvider>`). This is patched in react-router version 7.15.0 and @remix-run/server-runtime version 2.17.5.

shopify CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-400

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

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

  • react-router
  • remix-run\/server-runtime

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
shopify
Products
react-routerremix-run\/server-runtime

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-04: 1Technical Details · 2026-06-04: 106-04
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • DailyCVE@dailycve
    Disclosure

    🔴 #React Router (Framework Mode), DoS via Unbounded Path Expansion, #CVE-2026-42342 (High) -DC-Jun2026-189 https://dailycve.com/react-router-framework-mode-dos-via-unbounded-path-expansion-cve-2026-42342-high-dc-jun2026-189/

    Post summary

    The post announces a new high‑severity CVE (CVE-2026-42342) affecting React Router in framework mode, describing a denial‑of‑service vulnerability caused by unbounded path expansion; no exploit details, patches, or active use are mentioned.

    0101163
    208 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appshopifyreact-router-node.js-
Appshopifyremix-run\/server-runtime-node.js-

Explore more

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