Catalyst 1.3.6 Addresses Security Vulnerability

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Catalyst

Catalyst v1.3.6 release addresses a security vulnerability (CVE-2025-55184, CVE-2025-55183) that affects React Server Components.

Key Changes

Next.js 15.5.8: Upgraded from Next.js 15.5.7 to 15.5.8
React 19: Upgraded to React 19.1.3 and React DOM 19.1.3

Migration Guide

Refer to the full migration guide in our developer release notes.

Release Tags

We have published new tags for the Core and Makeswift versions of Catalyst. Target these tags to pull the latest code:

And as always, you can pull the latest stable release with these tags:

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Developer Documentation Technical Writer