CVE-2026-33244
Published:June 02, 2026
Updated:June 05, 2026
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.
Affected Packages
react-router (CDN_JS):
Affected version(s) >=7.5.1 <7.13.2Fix Suggestion:
Update to version 7.13.2https://github.com/remix-run/react-router.git (GITHUB):
Affected version(s) >=react-router@7.5.1 <react-router@7.13.2Fix Suggestion:
Update to version react-router@7.13.2react-router (NPM):
Affected version(s) >=7.5.1 <7.13.2Fix Suggestion:
Update to version 7.13.2react-router (NPM):
Affected version(s) >=7.5.1 <7.13.2Fix Suggestion:
Update to version 7.13.2Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.03