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Release notes

Your bookmark friendly source for BigCommerce platform updates and enhancements.

December 22, 2025 at 11:00 AM CT

API, B2B, and Catalyst Documentation Updates

API
B2B
Catalyst
Storefront API

This update includes improvements across our core APIs, integrations, B2B tooling, and Catalyst storefront experience. On the API side, we’ve improved catalog accuracy, expanded translation support for product filters and options via GraphQL, clarified tax rounding strategies, and updated Store Information docs to the v3 endpoint. For integrations, we’ve added clearer guidance on generating secure JWT tokens and navigating the app submission review process. B2B developers get new Storefront GraphQL docs, clearer behavior for the B2B Orders API and order migration, plus new Buyer Portal setup guides. And for Catalyst, we’ve introduced a deployment overview and a new beta experience for syncing products to Makeswift and surfacing them as routes.

API

Integrations

B2B

  • GraphQL Storefront API - Overview

    Added documentation for B2B Storefront GraphQL API

  • B2B Orders API

    This update discloses the default filtering behaviour of the B2B "Get All Orders" API, which returns only the last year of orders if no filter parameters are provided

  • Prevent Order Migration

    The Create a Company User S2S endpoint information now indicates what happens to existing orders from previous B2C customers converted to B2B Company users

  • Buyer Portal Guides

    We've created new guides for setting up Buyer Portal covering native Stencil, Headless, and Catalyst deployment with the default build when possible and custom Buyer Portal in any case

Catalyst

Integrations

B2B

  • GraphQL Storefront API - Overview

    Added documentation for B2B Storefront GraphQL API

  • B2B Orders API

    This update discloses the default filtering behaviour of the B2B "Get All Orders" API, which returns only the last year of orders if no filter parameters are provided

  • Prevent Order Migration

    The Create a Company User S2S endpoint information now indicates what happens to existing orders from previous B2C customers converted to B2B Company users

  • Buyer Portal Guides

    We've created new guides for setting up Buyer Portal covering native Stencil, Headless, and Catalyst deployment with the default build when possible and custom Buyer Portal in any case

Catalyst

December 12, 2025 at 4:02 PM CT

Catalyst 1.3.7 Addresses Security Vulnerability

Catalyst

A high-severity Denial of Service (CVE-2025-55184) and a medium-severity Source Code Exposure (CVE-2025-55183) related to React Server Components have been disclosed affecting React versions 19.0. This includes Next.js which is used for internal applications at Commerce as well as customers building storefronts using Catalyst and Makeswift. To avoid exposure, Next.js and React need to be updated to their latest patched versions. 

The initial fix was incomplete and did not fully prevent denial-of-service attacks for all payload types, resulting in CVE-2025-67779.

Important: This release provides an additional security patch for the same CVEs addressed in Catalyst 1.3.6. If you upgraded to 1.3.6, you should upgrade to 1.3.7 to receive the latest security fixes.

Catalyst v1.3.7 release addresses these security vulnerabilities, including the additional CVE-2025-67779.

Key Changes

  • Next.js 15.5.9: Upgraded from Next.js 15.5.8 to 15.5.9

  • React 19: Upgraded to React 19.1.4 and React DOM 19.1.4

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:

December 11, 2025 at 6:32 PM CT

Catalyst 1.3.6 Addresses Security Vulnerability

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:

December 3, 2025 at 7:03 PM CT

Catalyst v1.3.5 Addresses Security Vulnerability

Catalyst

This Catalyst v1.3.5 release addresses a critical security vulnerability (CVE-2025-55182) that affects React Server Components.

Key Changes

  • Next.js 15.5.7: Upgraded from Next.js 15.5.1-canary.4 to 15.5.7 (no more canary)

  • React 19: Upgraded to React 19.1.2 and React DOM 19.1.2

  • Partial Prerendering (PPR) Removed: Removed partial prerendering as it's unsupported in non-canary versions of Next.js 15.

Next.js 15.5.7 Upgrade

Catalyst has been upgraded to Next.js 15.5.7. This upgrade moves from the canary release to the stable release and requires migration steps for existing stores to fix a security vulnerability.

Critical Security Update

This upgrade addresses a critical security vulnerability (CVE-2025-55182) that affects React Server Components. The vulnerability allowed unauthenticated remote code execution on servers running React Server Components. This upgrade includes:

  • Next.js 15.5.7 with the security patch

All users are strongly encouraged to upgrade immediately.

Partial Prerendering (PPR) Removed

Important: PPR (Partial Prerendering) has been removed in this release. PPR was only available in the Next.js 15.5.1-canary.4 release and is not supported in the stable 15.5.7 release.

  • The ppr experimental flag has been removed from next.config.ts

  • This may result in different performance characteristics compared to the Next.js 15.5.1-canary.4 + PPR setup

Migration Guide

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

Getting Started

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:

November 24, 2025 at 8:05 AM CT

API & Documentation Improvements

API

We’re excited to announce several impactful updates to our platform and its documentation aimed at improving developer workflow and feature clarity. Notable enhancements include new support for coupon code parameters in the single coupon codes API, a major increase in the maximum customer segments per store, and expanded product API endpoints with additional include fields. We’ve also clarified best practices for escaping double quotes in GraphQL queries and improved the organization of our app documentation by moving Draft Apps into a dedicated section under Apps > Develop.


API

Other Improvements

November 10, 2025 at 2:14 PM CT

Catalyst v1.3 is live!

Catalyst

We are excited to announce the release of Catalyst v1.3, which brings new features including a cookie consent manager and gift certificate functionality, and additional improvements.

Consent Manager

We have added a cookie consent manager to Catalyst that utilizes the c15t.com consent management library under the hood to manage shopper privacy preferences when it comes to cookies and data collection. This provides a comprehensive solution for General Data Protection Regulation (GDPR), California Consumer Privacy Act (CCPA), and other privacy regulation compliance.

Once you enable cookie tracking in your storefront settings, shoppers will see a consent banner that allows them to manage their privacy preferences for different types of cookies and data collection activities.

The consent manager is fully integrated with BigCommerce's Script Manager, ensuring that all analytics and marketing scripts respect shopper consent preferences. When cookie consent is enabled in your channel storefront settings, Catalyst will automatically manage which scripts load based on the shopper's selections—essential and unknown scripts always load, while analytics, functional, and targeting scripts only run once consent is granted.

This integration ensures a consistent privacy experience across Catalyst and Stencil storefronts, maintaining feature parity in how consent-aware scripts are loaded and categorized.

BigCommerce's consent categories are automatically mapped to c15t's standardized ones, so existing Storefront Script configurations continue to work without modification. We're collaborating closely with the c15t team to extend support for additional features such as footer script placement.

If your storefront relies on specific script placement or privacy handling use cases, we'd love to hear your feedback as we refine this integration further.

Gift Certificates

We have implemented Gift Certificate functionality in Catalyst to mirror what is already available in Stencil. This includes:

  • Enabling shoppers to purchase gift certificates (respecting merchant-defined configurations such as fixed vs. variable amounts, expiration durations, and available templates)

  • Previewing certificates before purchase

  • Redeeming them in the cart and checkout (API already exists)

  • Checking balances directly from the storefront

To support these experiences, we also are introducing foundational GraphQL Storefront API operations for gift certificates, laying the groundwork for future extensibility.

Improvements and Bug Fixes

Translation Updates

This release includes translation updates across multiple language files to improve accuracy and completeness. These updates correct translation errors, add missing strings for new features (including the cookie consent manager and gift certificates functionality), and refine existing translations to better match the intended meaning and context for international shoppers.

Migration Notes

Please refer to 1.3.0 changelog for more details and migration notes on this release.

Getting Started

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:

November 10, 2025 at 8:07 AM CT

API & B2B Updates

API
B2B

This release sharpens documentation and streamlines integrations across our API and B2B features. Highlights include support for additional checkout URLs (buybutton, mcp), clearer field definitions and examples (e.g., order_id as a string, updated_at behavior), and refined guidance for tax provider workflows and product custom fields. On the B2B side, we’ve updated authentication to include the Store Hash in the payload for affected endpoints and shipped targeted fixes to the Catalyst/B2B guides to speed up setup.

API

B2B

  • Short-term fixes for the Catalyst/B2B guide

    Various improvements and content fixes for the Catalyst and B2B setup guides.

  • Improved B2B Authentication Documentation

    Streamlined and updated B2B authentication documentation for improved clarity and accuracy, reflecting recent changes to authentication processes.

  • Clarified Store Hash requirement for new authentication process.

    • Moved Store Hash into authentication variables instead of parameters

    • Removed Store Hash from requirements on authentication endpoints for generating tokens

    • Affected API Endpoints

      • POST /api/v2/auth/token

      • GET /api/v2/orders

      • POST /api/v2/products

      • Any other endpoints requiring Store Hash as part of authentication

October 27, 2025 at 11:19 AM CT

API, B2B, Stencil, and Catalyst

API
B2B
Stencil
Catalyst

What’s New

Cleaner APIs (refund quote simplification, shipping cost comparisons, Cart image_url, batch metafield filters), tighter webhook/tax requirements, and an updated Payments Postman collection.

B2B docs clarify authentication and pending-company behavior, Stencil guidance aligns to INP, and Catalyst onboarding details redirected checkout + MSF.

Dive into the notes below for the full rundown.

API

B2B

Stencil

  • Core Web Vitals update

    Replaced references to First Input Delay (FID) with Interaction to Next Paint (INP) in Stencil theme creation guidance to reflect new performance standards.

Catalyst

  • Catalyst onboarding clarity

    Expanded guidance around redirected checkout and Multi-Storefront (MSF) requirements to reduce setup confusion.

October 9, 2025 at 10:27 AM CT

B2B, API, Storefront, Stencil

API
Unified Billing
Storefront API
B2B
Stencil

Storefront

B2B

API / GraphQL

Stencil

October 1, 2025 at 1:28 PM CT

Cornerstone 6.17.0 (10-01-2025)

Cornerstone
Stencil

6.17.0 (10-01-2025)

  • Add net-new "order.pickup_addresses" to unify objects used on Order Details and Order Invoice pages #2557

  • Removed banner widget configuration and related translations #2561

  • Add support for shipping discounts in "order.total_rows" for use on the Order Details and Order Invoice pages #2568

  • Updates eslint to v8 #2570

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