Description
React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain URLs passed to the redirect function can trigger an open redirect to an external domain due to path values starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the validation done by the application prior to returning the redirect. This does not impact applications using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4.
Published: 2026-06-02
Score: 6.6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-2j2x-hqr9-3h42 React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation
History

Fri, 19 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 04 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Shopify
Shopify react-router
CPEs cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
Vendors & Products Shopify
Shopify react-router
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Wed, 03 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 05:00:00 +0000

Type Values Removed Values Added
First Time appeared Remix-run
Remix-run react-router
Vendors & Products Remix-run
Remix-run react-router

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description React Router is a router for React. In versions 7.0.0 through 7.14.0 and 6.7.0 through 6.30.3, certain URLs passed to the redirect function can trigger an open redirect to an external domain due to path values starting with // being reinterpreted as protocol-relative URLs. The level of impact depends on the validation done by the application prior to returning the redirect. This does not impact applications using Declarative Mode (<BrowserRouter>). This is patched in versions 7.14.1 and 6.30.4.
Title React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation
Weaknesses CWE-601
References
Metrics cvssV4_0

{'score': 6.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U'}


Subscriptions

Remix-run React-router
Shopify React-router
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-03T15:56:43.041Z

Reserved: 2026-04-09T20:59:17.619Z

Link: CVE-2026-40181

cve-icon Vulnrichment

Updated: 2026-06-03T15:56:39.667Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-02T20:16:35.597

Modified: 2026-06-04T18:46:47.107

Link: CVE-2026-40181

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-02T17:55:09Z

Links: CVE-2026-40181 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T04:45:25Z

Weaknesses