Magento 2.4.8 Upgrade – Features, Security Fixes, Tech Stack Changes

Magento 2.4.8 is the latest release (April 2025) from Adobe, and it’s more than just a version bump. It includes critical security patches, performance improvements, and a mandatory tech stack upgrade to PHP 8.3. For Magento store owners and developers, this Magento 2.4.8 Upgrade is essential to stay secure, PCI-compliant, and future-ready.

In this post, we break down everything you need to know about Magento 2.4.8—from features and tech stack changes to critical bug fixes and how to upgrade safely.

What’s New in Magento 2.4.8?

Magento 2.4.8 was officially released in April 2024 and includes security-only patch 2.4.7-p1, along with key platform enhancements, bug fixes, and performance optimizations.

🔧 Key Highlights:

13+ security fixes and platform hardening
Official support for PHP 8.3 and PHP 8.4
Support for MariaDB 11.4
Support for OpenSearch 2 instead of Elasticsearch
Fix for critical cartId = NULL GraphQL bug
Improved performance in checkout, indexing, and cart operations
Over 150 quality fixes across both Magento Open Source and Adobe Commerce

Updated Tech Stack Requirements

Before upgrading, it’s essential to ensure your server environment is compatible with the new Magento 2.4.8 requirements.

Magento 2.4.8 System Requirements:

Component	Required Version (as of 2.4.8)
PHP	PHP 8.3 / 8.4
Mariadb	11.4
New Relic	11.5.0.18+, 10.15.0.4+
Redis	Valkey 8
Composer	2.8
OpenSearch	2
RabbitMQ	4

⚠️ PHP 8.1 and 8.2 is no longer supported. You must upgrade to PHP 8.3 or 8.4 before attempting the Magento 2.4.8 upgrade.

Security Enhancements in Magento 2.4.8

Magento 2.4.8 includes 13+ security fixes that address core vulnerabilities, many of which were reported by the community and security researchers.

🔐 Key Security Fixes:

Resolved vulnerabilities related to remote code execution (RCE) and cross-site scripting (XSS)
Improved admin token authentication and invalidation
Enhanced CAPTCHA logic and admin login protection
Strengthened ACL (Access Control List) rules
Added input validation across multiple APIs

Adobe Commerce customers can also benefit from enhanced security with Web Application Firewall (WAF) and DDoS protection via Adobe Commerce Cloud.

Critical Bug Fix: `cartId = NULL` in GraphQL

A known issue in previous Magento versions caused GraphQL APIs to return cartId = NULL when creating guest carts, breaking:

Headless storefronts (Vue Storefront, PWA Studio, etc.)
Mobile apps using GraphQL APIs
Custom checkout implementations

Magento 2.4.8 fully resolves this bug, restoring cart stability and checkout reliability for API-driven storefronts.

Performance Improvements

Magento 2.4.8 includes backend and frontend optimizations:

Improved performance in checkout and cart operations
Faster indexing and reindexing for large catalogs
Better GraphQL response times
Optimized admin grid loading
Reduced memory consumption in static content deployment

Extension & Theme Compatibility

Magento 2.4.8’s reliance on PHP 8.3 and MariaDB 11.4 means:

Many older extensions may break
Themes that rely on deprecated JS may fail
Custom modules may need refactoring

Compatibility Audit Checklist:

Update all extensions to 2.4.8-compatible versions
Refactor any code incompatible with PHP 8.3
Replace Elasticsearch dependencies with OpenSearch
Test theme compatibility with latest jQuery

Magento 2.4.8 Upgrade Process

Here’s how Scommerce Mage handles upgrades:

Step-by-Step Upgrade Plan

Server Audit :- Ensure support for PHP 8.3, MariaDB 11.4, OpenSearch 2
Extension Compatibility :- Thorough testing and compatibility fixes for all extensions
Backup:- Full database and filesystem snapshots
Composer Upgrade

composer require magento/product-community-edition 2.4.8 --no-update 
composer update

Deployment

bin/magento setup:upgrade bin/magento setup:di:compile bin/magento setup:static-content:deploy -f bin/magento cache:flush

QA and Regression Testing:- Full functional testing in staging

Go-Live:- Deploy during low traffic window

Don’t leave your Magento store vulnerable or lagging behind on outdated software.

With Magento 2.4.8 introducing major stack changes — like PHP 8.3, MariaDB 11.4, and OpenSearch 2 — expert handling is essential to avoid costly downtime or broken functionality.

At Scommerce Mage, we’ve helped hundreds of businesses upgrade Magento safely and efficiently.