CVE-2026-53669: CWE-601: URL Redirection to Untrusted Site ('Open Redirect') in remix-run react-router
React Router is a router for React. Versions 6.0.0 through 7.17.0 are vulnerable to Open Redirtect through use of backslashes in <Link> and useNavigate. This issue is a follow up to CVE-2025-68470 and has been fixed in version 7.18.0.
AI Analysis
Technical Summary
CVE-2026-53669 is an open redirect vulnerability (CWE-601) in the remix-run react-router library affecting versions 6.0.0 through 7.17.0. The issue arises from improper handling of backslashes in <Link> and useNavigate components, enabling attackers to redirect users to untrusted external URLs. This vulnerability follows a prior related issue (CVE-2025-68470) and has been addressed in react-router version 7.18.0.
Potential Impact
Successful exploitation could allow an attacker to redirect users to malicious external websites, potentially facilitating phishing or other social engineering attacks. The vulnerability does not require privileges or user interaction beyond clicking a crafted link, but user interaction is necessary. The CVSS 5.1 (medium severity) reflects network attack vector, low complexity, no privileges required, user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade react-router to version 7.18.0 or later, where this vulnerability is fixed. No official patch or temporary fix is indicated other than upgrading. Until upgraded, avoid using untrusted input in <Link> or useNavigate components that could include backslashes. Patch status is confirmed fixed in 7.18.0.
CVE-2026-53669: CWE-601: URL Redirection to Untrusted Site ('Open Redirect') in remix-run react-router
Description
React Router is a router for React. Versions 6.0.0 through 7.17.0 are vulnerable to Open Redirtect through use of backslashes in <Link> and useNavigate. This issue is a follow up to CVE-2025-68470 and has been fixed in version 7.18.0.
CVSS v4.0
Score 5.1medium
Affected software
remix-run
react-router
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-53669 is an open redirect vulnerability (CWE-601) in the remix-run react-router library affecting versions 6.0.0 through 7.17.0. The issue arises from improper handling of backslashes in <Link> and useNavigate components, enabling attackers to redirect users to untrusted external URLs. This vulnerability follows a prior related issue (CVE-2025-68470) and has been addressed in react-router version 7.18.0.
Potential Impact
Successful exploitation could allow an attacker to redirect users to malicious external websites, potentially facilitating phishing or other social engineering attacks. The vulnerability does not require privileges or user interaction beyond clicking a crafted link, but user interaction is necessary. The CVSS 5.1 (medium severity) reflects network attack vector, low complexity, no privileges required, user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade react-router to version 7.18.0 or later, where this vulnerability is fixed. No official patch or temporary fix is indicated other than upgrading. Until upgraded, avoid using untrusted input in <Link> or useNavigate components that could include backslashes. Patch status is confirmed fixed in 7.18.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-09T20:50:36.877Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a67da609c2644c7f8ef5fb5
Added to database: 07/27/2026, 22:23:28 UTC
Last enriched: 07/30/2026, 22:10:30 UTC
Last updated: 09/10/2026, 20:01:50 UTC
Views: 144
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