CVE•Published 2026-06-02•Modified 2026-06-04•0 articles on news•5 live references•NVD data

CVE-2026-34077Shopify · React-router

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 88% of all CVEs

Weaknesses (CWE)

CWE-770Allocation of Resources Without Limits or Throttling

Description

React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.

Timeline

Published 2026-06-02

Modified 2026-06-04

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34077

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Shopify React-router"

All exposed Shopify React-router instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"React-router"

HTTP body or banner mentions "React-router" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34077