The AuthKit Remix Library renders sensitive auth data in HTML

Summary Before 0.15.0, @workos-inc/authkit-remix returned sensitive authentication artifacts from the authkitLoader, specifically sealedSession and accessToken. Because these values were returned from the loader, they were embedded into the server-rendered HTML and became readable by any script...

PT-2025-32422 · Workos · Authkit

Name of the Vulnerable Software and Affected Versions: @workos-inc/authkit-remix versions 0.14.1 and below Description: The AuthKit library for Remix exposed sensitive authentication artifacts – specifically sealedSession and accessToken – by returning them from the authkitLoader, causing them to...

This Week in Spring - May 13th, 2025

Hi, Spring fans! As I write this, I'm at the amazing Code Remix event in Miami well, technically Tampa, Florida. I'll also be speaking at the Tampa JUG while I'm there, so look out! After that, I'll be headed back to Europe—a wee bit further north this time—to Stockholm for the amazing JForum...

This Week in Spring - May 6th, 2025

Hi, Spring fans! As I write this, I'm winging my way to lovely London, UK, for the amazing Devoxx UK event! I'll be looking at the wide and wonderful world of Springdom. Then, from there, it's off to Code Remix in Miami. I'll also be speaking at the Tampa JUG while I'm there, so look out! After...

CVE-2025-31137

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

GHSA-4Q56-CRQP-V477 Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

Impact We received a report about a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an incoming Request by putting a URL pathname in the port section of a URL...

@common-stack/frontend-stack-react (>=8.0.1-alpha.0, <=8.4.1-alpha.0), @epic-web/workshop-app (>=5.6.0, <=5.28.0) +4 more potentially affected by CVE-2025-31137 via @remix-run/express (>=2.11.1, <=2.16.3-pre.0)

@remix-run/express NPM version =2.11.1, =8.0.1-alpha.0, =5.6.0, =0.1.49, =2.11.1, =0.0.5, =3.0.0, =3.4.6 Source cves: CVE-2025-31137 Source advisory: GHSA-4Q56-CRQP-V477...

Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

Impact We received a report about a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an incoming Request by putting a URL pathname in the port section of a URL...

@common-stack/frontend-stack-react (>=8.0.1-alpha.0, <=8.4.1-alpha.0), @epic-web/workshop-app (>=5.6.0, <=5.28.0) +4 more potentially affected by CVE-2025-31137 via @remix-run/express (>=2.11.1, <=2.16.3-pre.0)

@remix-run/express NPM version =2.11.1, =8.0.1-alpha.0, =5.6.0, =0.1.49, =2.11.1, =0.0.5, =3.0.0, =3.4.6 Source cves: CVE-2025-31137 Source advisory: OSV:GHSA-4Q56-CRQP-V477...

CVE-2025-31137

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

CVE-2025-31137 Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

CVE-2025-31137 Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

CVE-2025-31137

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

@common-stack/frontend-stack-react (>=8.0.1-alpha.0, <=8.4.1-alpha.0), @epic-web/workshop-app (>=5.6.0, <=5.28.0) +4 more potentially affected by CVE-2025-31137 via @remix-run/express (>=2.11.1, <=2.16.3-pre.0)

@remix-run/express NPM version =2.11.1, =8.0.1-alpha.0, =5.6.0, =0.1.49, =2.11.1, =0.0.5, =3.0.0, =3.4.6 Source cves: CVE-2025-31137 Source advisory: MEND:CVE-2025-31137...

CVE-2025-31137 Remix and React Router allow URL manipulation via Host / X-Forwarded-Host headers

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

CVE-2025-31137

Summary: A Host/X-Forwarded-Host header manipulation vulnerability in Remix/React Router affects Remix 2 and React Router 7 users using the Express adapter. An attacker can spoof the incoming Request URL by placing a pathname in the URL’s port section of a header-hosted URL, potentially altering ...

PT-2025-53558

Уязвимость адаптера Express библиотеки маршрутизации React Router react-фреймворка Remix связана с недостатками обработки HTTP-запросов. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, вызвать отказ в обслуживании...

React-Router environmental issue vulnerabilities

react-router is a declarative routing for React open-sourced by Remix. An environmental issue vulnerability exists in react-router versions 7.0.0 through 7.4.0, which stems from an Express adapter for Remix or React Router that allows request URLs to be forged via URL pathnames...

CVE-2025-31137: Inconsistent Interpretation of HTTP Requests

React Router is a multi-strategy router for React bridging the gap from React 18 to React 19. There is a vulnerability in Remix/React Router that affects all Remix 2 and React Router 7 consumers using the Express adapter. Basically, this vulnerability allows anyone to spoof the URL used in an...

PT-2025-14377 · Express +2 · Express +2

Name of the Vulnerable Software and Affected Versions: React Router versions 7.0.0 through 7.4.0 Remix versions 2.11.1 and later, prior to 2.16.3 Description: The issue allows anyone to spoof the URL used in an incoming Request by putting a URL pathname in the port section of a URL that is part o...