URGENT: Security Alert CVE-2025-55182 (React2Shell)
This vulnerability is present in the following versions of React Server and Next.js:
react-server-dom*: 19.0.0, 19.1.0, 19.1.1, and 19.2.0
Next.js: 14.3.0-canary, 15.x, and 16.x (App Router)
Any framework or library bundling the React Server Components implementation is likely affected.
This includes, but is not limited to:
Next.js
Vite RSC plugin
Parcel RSC plugin
React Router RSC preview
RedwoodSDK
Waku
The patched React Server versions are:
19.0.1
19.1.2
19.2.1
The patched Next.js versions are:
14.3.0-canary.88
15.0.5
15.1.9
15.2.6
15.3.6
15.4.8
15.5.7
16.0.7
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Replies (4)
For Next.js Canary Users:
If you are on version 14.3.0-canary.77 or newer, please downgrade to a stable 14.x release or 14.3.0-canary.76.
Incredibly important alert. Thank you for getting this critical information out so quickly! Patching ASAP.
🚨 URGENT: Thank you for sharing this critical vulnerability info. Everyone running the affected versions needs to prioritize patching to React Server 19.0.2+ and Next.js 16.0.7+ (or 14.3.0-canary.88+). Check your dependencies now!
Thanks for the immediate heads-up on CVE-2025-55182. Deploying the patch immediately on our Next.js and React Server instances. Critical information.