CVE-2026-21884 React Router SSR XSS in ScrollRestoration

React Router is a router for React. In @remix-run/react version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, a XSS vulnerability exists in in React Router's API in Framework Mode when using the getKey/storageKey props during Server-Side Rendering which could allow arbitrary JavaScript...

CVE-2026-21884

CVE-2026-21884 is a Cross-Site Scripting (XSS) vulnerability in React Router SSR usage. Affected: @remix-run/react prior to 2.17.3 and react-router 7.0.0–7.11.0. Root cause: during Server-Side Rendering in Framework Mode, using getKey/storageKey with can allow arbitrary JavaScript execution if u...

CVE-2026-21884 React Router SSR XSS in ScrollRestoration

React Router is a router for React. In @remix-run/react version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, a XSS vulnerability exists in in React Router's API in Framework Mode when using the getKey/storageKey props during Server-Side Rendering which could allow arbitrary JavaScript...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-61686 React Router has Path Traversal in File Session Storage

React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage is being used from @react-router/node or @remix-run/node/@remix-run/deno in Remix v2 with an...

CVE-2025-59057 React Router has XSS Vulnerability

React Router is a router for React. In @remix-run/react versions 1.15.0 through 2.17.0. and react-router versions 7.0.0 through 7.8.2, a XSS vulnerability exists in in React Router's meta/ APIs in Framework Mode when generating script:ld+json tags which could allow arbitrary JavaScript execution...

CVE-2025-59057 React Router has XSS Vulnerability

React Router is a router for React. In @remix-run/react versions 1.15.0 through 2.17.0. and react-router versions 7.0.0 through 7.8.2, a XSS vulnerability exists in in React Router's meta/ APIs in Framework Mode when generating script:ld+json tags which could allow arbitrary JavaScript execution...

CVE-2025-59057 React Router has XSS Vulnerability

React Router is a router for React. In @remix-run/react versions 1.15.0 through 2.17.0. and react-router versions 7.0.0 through 7.8.2, a XSS vulnerability exists in in React Router's meta/ APIs in Framework Mode when generating script:ld+json tags which could allow arbitrary JavaScript execution...

PT-2026-2138

Name of the Vulnerable Software and Affected Versions react-router versions 7.0.0 through 7.11.0 @remix-run/server-runtime versions prior to 2.17.3 Description React Router, used as a router for React applications, is susceptible to Cross-Site Request Forgery CSRF attacks. This affects document...

Cross-site Request Forgery (CSRF)

Overview @remix-run/server-runtime is a Server runtime for Remix Affected versions of this package are vulnerable to Cross-site Request Forgery CSRF due to the improper origin checks of UI route submissions in server-side route action handlers in Framework Mode. An attacker can execute unauthoriz...

React Router has CSRF issue in Action/Server Action Request Processing

React Router or Remix v2 is vulnerable to CSRF attacks on document POST requests to UI routes when using server-side route action handlers in Framework Mode, or when using React Server Actions in the new unstable RSC modes. !NOTE This does not impact your application if you are using Declarative...

@buttery/tokens (>=0.1.2, <=0.1.10), @common-stack/frontend-stack-react (>=6.0.6-alpha.23, <=10.0.1-alpha.0) +29 more potentially affected by CVE-2026-22030 via @remix-run/server-runtime (>=2.0.0, <=2.17.2)

@remix-run/server-runtime NPM version =2.0.0, =0.1.2, =6.0.6-alpha.23, =6.0.6-alpha.28, =2.9.1-dario-6, =0.1.0, =5.6.0, =5.13.0, =5.6.0, =5.6.0, =0.0.1-alpha.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.17.2 and more Source cves: CVE-2026-22030 Source advisory:...

@buttery/tokens (>=0.1.2, <=0.1.10), @common-stack/frontend-stack-react (>=6.0.6-alpha.23, <=10.0.1-alpha.0) +29 more potentially affected by CVE-2026-22030 via @remix-run/server-runtime (>=2.0.0, <=2.17.2)

@remix-run/server-runtime NPM version =2.0.0, =0.1.2, =6.0.6-alpha.23, =6.0.6-alpha.28, =2.9.1-dario-6, =0.1.0, =5.6.0, =5.13.0, =5.6.0, =5.6.0, =0.0.1-alpha.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.0.0-pre.0, =2.17.2 and more Source cves: CVE-2026-22030 Source advisory:...

@1023-ventures/merope2 (>=0.2.1, <=0.2.9), @1023-ventures/vega-core (>=0.5.0, <=0.6.2) +1396 more potentially affected by CVE-2026-22029 via @remix-run/router (>=1.0.0, <=1.23.1-pre-v6.0)

@remix-run/router NPM version =1.0.0, =0.2.1, =0.5.0, =0.0.1, =0.0.1, =3.0.0, =0.0.0-beta-20260120211922, =1.0.0, =1.0.0, =1.0.0, =2.7.0, =0.0.1, =0.1.0, =0.0.0, =6.24.1, =8.19.1 and more Source cves: CVE-2026-22029 Source advisory: SNYK:JS-REMIXRUNROUTER-14908530...

@1023-ventures/merope2 (>=0.2.1, <=0.2.9), @1023-ventures/vega-core (>=0.5.0, <=0.6.2) +1396 more potentially affected by CVE-2026-22029 via @remix-run/router (>=1.0.0, <=1.23.1-pre-v6.0)

@remix-run/router NPM version =1.0.0, =0.2.1, =0.5.0, =0.0.1, =0.0.1, =3.0.0, =0.0.0-beta-20260120211922, =1.0.0, =1.0.0, =1.0.0, =2.7.0, =0.0.1, =0.1.0, =0.0.0, =6.24.1, =8.19.1 and more Source cves: CVE-2026-22029 Source advisory: OSV:GHSA-2W69-QVJG-HVJX...

Cross-site Scripting (XSS)

Overview @remix-run/router is a Nested/Data-driven/Framework-agnostic Routing Affected versions of this package are vulnerable to Cross-site Scripting XSS in the navigation redirect process for loaders or actions in Framework Mode, Data Mode, or the unstable RSC modes. An attacker can execute...

React Router vulnerable to XSS via Open Redirects

React Router and Remix v1/v2 SPA open navigation redirects originating from loaders or actions in Framework Mode, Data Mode, or the unstable RSC modes can result in unsafe URLs causing unintended javascript execution on the client. This is only an issue if developers are creating redirect paths...

@buttery/tokens (>=0.1.2, <=0.1.10), @common-stack/frontend-stack-react (>=6.0.6-alpha.23, <=10.0.1-alpha.0) +7 more potentially affected by CVE-2026-21884 via @remix-run/react (>=2.0.0, <=2.17.2)

@remix-run/react NPM version =2.0.0, =0.1.2, =6.0.6-alpha.23, =0.1.0, =5.6.0, =0.0.1-alpha.0, =2.0.0-pre.0, =3.0.0, =0.4.0, =0.11.29 Source cves: CVE-2026-21884 Source advisory: SNYK:JS-REMIXRUNREACT-14908292...

Cross-site Scripting (XSS)

Overview @remix-run/react is a React DOM bindings for Remix Affected versions of this package are vulnerable to Cross-site Scripting XSS via the ScrollRestoration API when using the getKey or storageKey props during server-side rendering in Framework Mode. An attacker can execute arbitrary...